What does the following Guile scheme code do? (eq? y '.) (cons x '.) The code is not valid in MzScheme, is there a portable equivalent across scheme implementations? I am trying to port this code written by someone else. Guile seems to respond to '. with #{.}#, but I'm not sure what it means or how to do this in another scheme. ...
The usual approach of test: $(PERL) "-MExtUtils::Command::MM" "-e" "test_harness($(TEST_VERBOSE), '$(INCDIRS)')" $(TEST_FILES) fails to run Guile scripts, because it passes to Guile the extra parameter "-w". ...
I would like to have a Guile script, which implements functions, which output test result messages according to the TAP protocol. ...
I develop an extension module for Guile, written in C. This extension module embeds a Python interpreter. Since this extension module invokes the Python interpreter, I need to verify that it properly manages the memory occupied by Python objects. I found that the Python interpreter is well-behaved in its own memory handling, so that...
In Guile 1.6.*, the function scm_istring2number(char *str,int strlen,int radix) does the work. However, this function does not exist in Guile 1.8.. How can I accomplish the same task in Guile 1.8.? This is not trivial because the function scm_string_to_number(SCM str,int radix) does not convert numbers larger than 2^31-1 (at least ...
What are the popular (ok, popular is relative) web frameworks for the various flavours of LISP? ...
Using Gimp 2.6.6 for MAC OS X (under X11) as downloaded from gimp.org. I'm trying to automate a boring manual process with Script-Fu. I needed to parse the image file name to save off various layers as new files using a suffix on the original file name. My original attempts went like this but failed because (string-search ...) doesn't ...
I'm learning Emacs Lisp and I came across this decade old post saying that at some point Guile (Scheme) will replace Emacs Lisp, or Emacs will be rewritten with Guile. http://sanpietro.red-bean.com/guile/guile/old/3114.html I was wondering if this is still a possibility, and if developers should be trying to write Elisp with this in m...
I am currently working through SICP using Guile as my primary language for the exercises. I have found a strange behavior while implementing the exercises in chapter 3.5. I have reproduced this behavior using Guile 1.4, Guile 1.8.6 and Guile 1.8.7 on a variety of platforms and am certain it is not specific to my setup. This code works f...
I recently discovered that CGI scripts can be written in pretty much any language that can print to stdout. I've written a small guile cgi script that works on my local apache install, but not on my shared host: #!/usr/local/bin/guile -s !# (display "Content-Type: text/html") (newline) (newline) (display "hi") (newline) This is the o...
I received an unexpected result when redefining the + operator in a scheme program using guile. I should point out that this occurred while experimenting to try to understand the language; there's no attempt here to write a useful program. Here's the code: (define (f a b) 4) (define (show) (display (+ 2 2)) (display ",") (display (f...
I have this code guile> (cairo-pdf-surface-create "foo.pdf" 100.0 100.0) ; and get this error standard input:29:1: In procedure cairo-pdf-surface-create in expression (cairo-pdf-surface-create "foo.pdf" 100.0 ...): standard input:29:1: Wrong type (expecting string): 100.0 ABORT: (wrong-type-arg) and when I use strings as width and hei...