h4k1m0u/scheme.md

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Notes about the Scheme language

Raw

Installation

$ sudo apt install guile-3.0

Help

From the command line:

$ sudo apt install guile-3.0-doc
$ info --vi-keys guile  # to use vim keybindings in info

h: Show shortcuts.
[ and ]: Go to the previous/next node.
g and G: Go to the start/end of the document.
Tab: Jump to hyperlinks (in order).
Alt-g and ': Follow the hyperlink, and return to where we were.
j and k: Scroll one line down/up.
u and d: Scroll half a page up/down.
/<text>: Search for occurrences of text.
n and N: Jump to the next/previous occurrence.

Gimp script-fu

Run TinyScheme from terminal: gimp-console -b -.
PDB (Procedure Database): internal registry of all Gimp functions that can be called.
E.g.: (gimp-image-scale image new-width new-height)
Image: While gimp image (canvas, layers...).
Drawable: Usually one layer (active one).
Browse plugins:

$ apt-get source gimp
$ cd <gimp>/plug-ins/script-fu

Functions (script-fu ...): for registering plugins.

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