1 Classes and Objects

(require (planet cce/scheme:4:1/class))

This module provides tools for classes, objects, and mixins.

1.1 Predicates and Contracts

class-or-interface/c : flat-contract?

Recognizes classes and interfaces.

(object/c spec ...) → flat-contract?

spec : class-or-interface/c

Recognizes objects which are instances of all the given classes and interfaces.

(class/c spec ...) → flat-contract?

spec : class-or-interface/c

Recognizes classes which are subclasses (not strictly) and implementations, respectively, of all the given classes and interfaces.

(mixin/c [super-expr ...] [arg-expr ...] [sub-expr ...])

Function contract for a mixin whose first argument is the parent class c% matching (class/c super-expr ...), whose remaining arguments match arg-expr ..., and whose result matches (class/c c% sub-expr ...).

1.2 Mixins

(ensure-interface i<%> mx c%) → (class/c c% i<%>)

i<%> : interface?

mx : (mixin/c [] [] [i<%>])

c% : class?

Returns c% if it implements i<%>; otherwise, returns (mx c%).

1.3 Methods

(send+ obj [message arg ...] ...)

Sends each message (with arguments) to obj, then returns obj.

Examples:

(define c%     (class object%       (super-new)       (define/public (say msg) (printf "~a!\n" msg))))

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#<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/xml/xml-unit.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/xml/private/sig.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/xml/private/structures.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/xml/private/reader.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/xml/private/writer.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/xml/private/xexpr.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/xml/private/space.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/xml/private/syntax.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/mzlib/unitsig200.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/mzlib/unit200.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/mzlib/private/sigmatch.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/mzlib/private/unitidmap.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/mzlib/private/sigutil.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/mzlib/string.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/planet/planet-archives.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/planet/private/planet-shared.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/mzlib/file.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/planet/config.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/planet/cachepath.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/planet/private/define-config.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/setup/getinfo.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/planet/private/data.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/syntax/modread.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/scheme/sandbox.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/syntax/moddep.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/scheme/gui/dynamic.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/syntax/modcode.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/syntax/modcollapse.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/syntax/modresolve.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/syntax/private/modhelp.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/syntax/private/modcollapse-noctc.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/scribble/manual.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/scribble/basic.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/scribble/private/manual-style.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/scribble/private/manual-scheme.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/scribble/private/manual-mod.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/scribble/private/manual-tech.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/scribble/private/manual-bib.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/scribble/private/manual-proc.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/scribble/private/manual-form.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/scribble/private/manual-class.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/scribble/private/manual-unit.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/scribble/private/manual-vars.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/scribble/private/manual-bind.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/scribble/decode.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/scribble/struct.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/scribble/scheme.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/scribble/search.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/scribble/config.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/scribble/manual-struct.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/scribble/private/manual-ex.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/scheme/serialize.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/scheme/private/serialize.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/scribble/decode-struct.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/planet/resolver.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/mzlib/match.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/mzlib/date.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/net/url.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/net/head.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/mzlib/struct.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/planet/private/linkage.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/planet/parsereq.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/planet/private/short-syntax-helpers.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/scheme/match/legacy-match.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/scheme/match/parse-legacy.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/net/head-sig.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/net/head-unit.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/scheme/unit/lang.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/scheme/signature/lang.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/net/url-structs.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/net/url-sig.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/net/url-unit.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/net/tcp-sig.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/net/tcp-unit.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/net/uri-codec.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/net/uri-codec-sig.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/net/uri-codec-unit.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/mzlib/class.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/mzlib/for.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/scribble/private/manual-utils.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/scribble/private/qsloc.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/scribble/private/manual-method.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/planet/util.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/setup/pack.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/setup/plt-single-installer.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/setup/unpack.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/mzlib/inflate.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/net/base64.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/net/base64-sig.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/net/base64-unit.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/setup/option-sig.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/setup/setup-unit.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/setup/option-unit.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/launcher/launcher-sig.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/launcher/launcher-unit.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/dynext/dynext-sig.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/dynext/dynext-unit.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/compiler/sig.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/compiler/option-unit.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/compiler/compiler-unit.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/dynext/file-sig.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/dynext/link-sig.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/dynext/compile-sig.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/syntax/toplevel.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/mzlib/compile.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/compiler/cm.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/setup/private/omitted-paths.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/dynext/compile-unit.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/dynext/link-unit.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/dynext/file-unit.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/mzlib/include.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/mzlib/process.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/mzlib/sendevent.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/dynext/private/dirs.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/dynext/private/cmdargs.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/dynext/filename-version.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/version/utils.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/mzlib/cm-accomplice.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/compiler/embed.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/setup/variant.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/compiler/embed-unit.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/compiler/embed-sig.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/xml/plist.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/compiler/private/winicon.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/compiler/private/winsubsys.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/compiler/private/macfw.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/compiler/private/windlldir.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/compiler/private/collects-path.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/scheme/system.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/setup/private/path-utils.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/file/gzip.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/mzlib/deflate.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/mred/private/dynamic.ss orig-registry #<module-registry> current-registry #<module-registry>

> (send+ (new c%) [say 'Hello] [say 'Good-bye])

Hello!   Good-bye!

#(struct:object:c% ...)

(send-each objs message arg ...)

Sends the message to each object in the list objs, returning (void).

Examples:

(define c%     (class object%       (super-new)       (init-field msg)       (define/public (say to) (printf "~a, ~a!\n" msg to))))

skipping:  /Applications/PLT Scheme v4.1.3/collects/scheme/main.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/scheme/contract.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/scheme/class.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/scheme/unit.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/scheme/dict.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/scheme/include.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/scheme/pretty.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/scheme/math.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/scheme/match.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/scheme/shared.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/scheme/tcp.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/scheme/udp.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/scheme/list.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/scheme/string.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/scheme/function.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/scheme/path.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/scheme/file.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/scheme/port.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/scheme/cmdline.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/scheme/promise.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/scheme/bool.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/scheme/local.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/scheme/nest.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/syntax/context.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/syntax/kerncase.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/mzlib/port.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/scheme/private/portlines.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/mzscheme/main.ss orig-registry #<module-registry> current-registry 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#<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/syntax/modcollapse.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/syntax/modresolve.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/syntax/private/modhelp.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/syntax/private/modcollapse-noctc.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/scribble/manual.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/scribble/basic.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/scribble/private/manual-style.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/scribble/private/manual-scheme.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/scribble/private/manual-mod.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/scribble/private/manual-tech.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/scribble/private/manual-bib.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/scribble/private/manual-proc.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/scribble/private/manual-form.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/scribble/private/manual-class.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/scribble/private/manual-unit.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/scribble/private/manual-vars.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/scribble/private/manual-bind.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/scribble/decode.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/scribble/struct.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/scribble/scheme.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/scribble/search.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/scribble/config.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/scribble/manual-struct.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/scribble/private/manual-ex.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/scheme/serialize.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/scheme/private/serialize.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/scribble/decode-struct.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/planet/resolver.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/mzlib/match.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/mzlib/date.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/net/url.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/net/head.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/mzlib/struct.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/planet/private/linkage.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/planet/parsereq.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/planet/private/short-syntax-helpers.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/scheme/match/legacy-match.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/scheme/match/parse-legacy.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/net/head-sig.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/net/head-unit.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/scheme/unit/lang.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/scheme/signature/lang.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/net/url-structs.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/net/url-sig.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/net/url-unit.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/net/tcp-sig.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/net/tcp-unit.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/net/uri-codec.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/net/uri-codec-sig.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/net/uri-codec-unit.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/mzlib/class.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/mzlib/for.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/scribble/private/manual-utils.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/scribble/private/qsloc.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/scribble/private/manual-method.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/planet/util.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/setup/pack.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/setup/plt-single-installer.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/setup/unpack.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/mzlib/inflate.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/net/base64.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/net/base64-sig.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/net/base64-unit.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/setup/option-sig.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/setup/setup-unit.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/setup/option-unit.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/launcher/launcher-sig.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/launcher/launcher-unit.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/dynext/dynext-sig.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/dynext/dynext-unit.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/compiler/sig.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/compiler/option-unit.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/compiler/compiler-unit.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/dynext/file-sig.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/dynext/link-sig.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/dynext/compile-sig.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/syntax/toplevel.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/mzlib/compile.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/compiler/cm.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/setup/private/omitted-paths.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/dynext/compile-unit.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/dynext/link-unit.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/dynext/file-unit.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/mzlib/include.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/mzlib/process.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/mzlib/sendevent.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/dynext/private/dirs.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/dynext/private/cmdargs.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/dynext/filename-version.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/version/utils.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/mzlib/cm-accomplice.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/compiler/embed.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/setup/variant.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/compiler/embed-unit.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/compiler/embed-sig.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/xml/plist.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/compiler/private/winicon.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/compiler/private/winsubsys.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/compiler/private/macfw.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/compiler/private/windlldir.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/compiler/private/collects-path.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/scheme/system.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/setup/private/path-utils.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/file/gzip.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/mzlib/deflate.ss orig-registry #<module-registry> current-registry #<module-registry>     skipping:  /Applications/PLT Scheme v4.1.3/collects/mred/private/dynamic.ss orig-registry #<module-registry> current-registry #<module-registry>

> (send-each      (list (new c% [msg 'Hello])            (new c% [msg 'Good-bye]))      say 'World)

Hello, World!   Good-bye, World!