42 lines
1.3 KiB
Racket
42 lines
1.3 KiB
Racket
#lang scribble/doc
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@(require scribble/manual
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(for-label (except-in scheme/base file-size)
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teachpack/htdp/dir))
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@title[#:tag "dir"]{Working with Files and Directories: dir.ss}
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@declare-exporting[teachpack/htdp/dir]
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The teachpack provides structures and operations for working with files and
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directories:
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@defstruct[dir ([name string?][dirs (list-of dir?)][files (list-of file?)])]{}
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@defstruct[file ([name string?][content (list-of char?)])]{}
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@defproc[(create-dir [path string?]) dir?]{
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Turns the directory found at @scheme[path] on your computer into an instance of @scheme[dir?].}
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Sample: Set teachpack to <code>dir.ss</code> and click RUN:
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@(begin
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#reader scribble/comment-reader
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(schemeblock
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> (create-dir ".")
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(make-dir
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'|.|
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empty
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(cons (make-file 'ball1.gif 1289 empty)
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(cons (make-file 'blueball.gif 205 empty)
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(cons (make-file 'greenbal.gif 204 empty)
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(cons (make-file 'redball.gif 203 empty)
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(cons (make-file 'ufo.gif 1044 empty)
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(cons (make-file 'gif-test.ss 5811 empty)
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empty)))))))
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))
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Using ``.'' usually means the directory in which your program is
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located. In this case, the directory contains no sub-directories and six
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files.
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Note: Softlinks are always treated as if they were empty files.
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