commit 15802dc26dd87cb45ea76c6e245d759c11a664fa Author: Lassi Kortela Date: Thu Aug 4 21:00:11 2022 +0300 Add web page from Wayback Machine wayback_machine_downloader --to 20051218234159 http://www.gnustep.it/marko/GScheme/ diff --git a/www/GScheme.png b/www/GScheme.png new file mode 100644 index 0000000..68a6a00 Binary files /dev/null and b/www/GScheme.png differ diff --git a/www/index.html b/www/index.html new file mode 100644 index 0000000..1f095c3 --- /dev/null +++ b/www/index.html @@ -0,0 +1,187 @@ + + +GScheme + + + + +

GScheme

+ +A GNUstep-aware scheme interpreter. + +Includes many examples, e.g. the sieve of Erathostenes to compute primes, a +Koch curve plotter, mandelbrot set, graphs of various functions etc. GScheme +is fully tail recursive. The garbage collector bypasses GNUstep's +retain/release mechanism in order to deal with circular data structures.

+ +GScheme is document-based and you can edit more than one file at the +same time.

+ +Speed leaves something to be desired as there is a lot of overhead due +to Objective C.

+ +Press Ctrl-Return in the interpreter window to evaluate the last form +that you have entered. This will copy the form to the paste board, so that you +may re-enter it by pressing Alt-V. +

+ + +

+ +Download it + +here (TGZ) +or + +here (ZIP; Microsoft Internet Explorer 6). + +

+ +Special forms implemented include +

define, set!, lambda, +
if, and, or +
begin, apply, +
quote, case, cond, +
let, let, letrec, +
call-with-current-continuation +

+ +Primitives implemented include +

+, *, -, /, =, >, <, +
draw-move, draw-line, draw-color, +
sin, cos, sqrt, +
quotient, remainder, not, +
zero?, pair?, number?, eqv?, eq?, +
cons, car, cdr, list, null?, +
set-car!, set-cdr!, +
display, newline +

+ + +There is a library of additional primitives that are loaded on start-up. +

+ +New! As of July 23, 2002: + +

make-vector, vector?, list->vector, vector->list? +
vector-length, vector-ref, vector-set! and vector-fill!. +
asin, acos +

+ +Examples now include queens.scm, which solves the classic problem and +takes symmetries into account. + +

+ +New! As of July 31, 2002: + +

memory management completely reworked + +
browse-environment pops up a window that shows the current +environment (e.g. for environment diagrams); browse.scm shows how + +

+ +

+ +New! As of January 10, 2005: + +

memory management simplified +
new UI for browse-environment +
additional primitives: exp, log, tan, atan +
evaluate external files +
more intutive UI e.g. the last form entered is copied to the paste board +and may be repeated by pressing Alt-V +
better error handling +

+ +

+Important: older GNUstep installations may need to replace
+  #include <GNUstepBase/GSIMap.h>
+by
+  #include <base/GSIMap.h>
+at the very beginning of SchemeTypes.m.
+

+ +

+ +New! As of February 17, 2005: +

+New primitives: + +

draw-show produces an image window with the data that have + accumulated and resets the image +
draw-circle draws a circle of a given radius at the current position + without changing the position +
fill-circle is like draw-circle, but fills the circle +
random outputs a random integer in the interval [0, n) when invoked + with an integer "n" and a random double in the interval [0, v) when + invoked with a double "v" + +

+ +

+ +New! As of February 25, 2005: +

+New primitives, graphical ones come first. + +

string-size returns a pair containing the width and height of the + string in the current font +
draw-font sets the current font to a font of a given size +
draw-string draws a string at the current position and advances the + position to just behind the newly drawn string. +

+ +There is a demo in "text.scm." You will probably have to change the +font names in the demo to reflect the fonts that you have on your +system e.g. as displayed in the font panel of Ink.app. + +Additional primitives: + +

string->symbol +
symbol->string +
integer->char +
char->integer +
string-ref +
list->string +
string->list +
make-string +
string-append +
number->string (works for integers in bases between 2 and 36 and decimal floats). +

+ +

+ +New! As of Mar 2, 2005: +

+New primitives: + +

eval +
string-length +
draw-rect: draws a rectangle of the given width and height at the + current position +
fill-rect: fills the rectangle with the current color. +
format: format a string using the ~a escape etc. +

+ +My homepage is +here. + +

+ +markoriedelde@yahoo.de + + + + + \ No newline at end of file