► |  | Teachpacks

1 | Ht DP Teachpacks
2 | Ht DC Teachpacks
3 | Ht DP/ 2e Teachpacks

▼ | 1 | Ht DP Teachpacks

1.1 | Manipulating Images: "image.ss"
1.2 | Simulations and Animations: "world.ss"
1.3 | Converting Temperatures: "convert.ss"
1.4 | Guessing Numbers: "guess.ss"
1.5 | Master Minding: "master.ss"
1.6 | Simple Drawing: "draw.ss"
1.7 | Hangman: "hangman.ss"
1.8 | Managing Control Arrows: "arrow.ss"
1.9 | Manipulating Simple HTML Documents: "docs.ss"
1.10 | Working with Files and Directories: "dir.ss"
1.11 | Graphing Functions: "graphing.ss"
1.12 | Simple Graphical User Interfaces: "gui.ss"
1.13 | An Arrow GUI: "arrow-gui.ss"
1.14 | Controlling an Elevator: "elevator.ss"
1.15 | Queens: "show-queen.ss"
1.16 | Matrix Operations: "matrix.ss"

On this page:

dir
file
create-dir

Version: 4.1.4
top← prev up next →

#### 1.10`` Working with Files and Directories: "dir.ss"

The teachpack provides structures and operations for working with files and directories:

(struct dir (name dirs files))
name : string?
dirs : (list-of dir?)
files : (list-of file?)

(struct file (name content))
name : string?
content : (list-of char?)

(create-dir path) → dir?
path : string?

Turns the directory found at path on your computer into an instance of dir?.

Sample: Set teachpack to <code>dir.ss</code> and click RUN:

> (create-dir ".")
(make-dir
'|.|
empty
(cons (make-file 'ball1.gif 1289 empty)
(cons (make-file 'blueball.gif 205 empty)
(cons (make-file 'greenbal.gif 204 empty)
(cons (make-file 'redball.gif 203 empty)
(cons (make-file 'ufo.gif 1044 empty)
(cons (make-file 'gif-test.ss 5811 empty)
empty)))))))

Using “.” usually means the directory in which your program is located. In this case, the directory contains no sub-directories and six files.

Note: Softlinks are always treated as if they were empty files.

top← prev up next →