Re: How can I use arrows in csi?
Install the breadline egg and set up your ~/.csirc per this example: https://depp.brause.cc/breadline/examples/.csirc On Sun, Aug 13, 2023, 5:42 AM Oskar Werner wrote: > Hi, when I want to use arrows to move back, my terminal instead produces > ^[[D symbols, how can I get them to work? I installed chicken from arch > extra repo and I tested this behavior using both fish shell and bash shell. > Also everything works when I'm using python repl, so this problem with > chicken-csi. >
Re: Question about how to check a symbol is bound
Looks like unbound? and symbol-value take quoted symbols if passing them directly: And for list you have to use the transformed name scheme#list #;2> (unbound? 'x) #t #;3> (define x 1) #;4> (unbound? 'x) #f #;5> (symbol-value 'x) 1 #;6> (symbol-value 'scheme#list) # On Thu, Jun 22, 2023 at 10:15 PM Pan Xie wrote: > Hello > > I am new to CHICKEN scheme and here is a (very) quick question of how to > check whether a symbol is bound. > > I know it doable but I can't find the way. > > I don't find the methods from the main CHICKEN manual document. Then I > import the "symbol-value-utils" module. I believe the "unbound?" or > "symbol-value" will do what I want, but to my surprise they does NOT: > > I expect `symbol-value' will give me value of a symbol, but it will > throw exception for an > undefined symbol, even I provide the default value: > > (symbol-value foo #f) > Error: unbound variable: foo > > I expect (symbol-value (string->symbol "list")) will give me the list > procedure, but what I get is '#f' > > (symbol-value (string->symbol "list")) > #f > > I expect (unbound? foo) will return True value, but it just throw > exception. > > Does CHICKEN scheme provide facilities that make user check whether > arbitrary symbol is bound or get its value, just like the `boundp' or > `symbol-value' in Common Lisp? > > Thanks > Pan > > >
Re: srfi-tools egg
On Tue, Apr 25, 2023, 5:37 AM Lassi Kortela wrote: > We now have an up-to-date .egg file for the `srfi` command line tool, a > new program maintained by the SRFI Editor and volunteers to help run the > SRFI process. > > ... > > Would it make sense to add this egg to the Chicken coop? We can write > the requisite wiki page for it. > I was originally thinking about doing that, but since the srfi program needs the greater srfi-common file tree it's part of to be present in $SRFI_HOME to be able to run effectively, I changed my mind. Seemed easier to just check out the repository into the right spot and run chicken-install in it.
Re: New egg: srfi-227
On Wed, Apr 19, 2023 at 2:11 PM Mario Domenech Goulart wrote: > Hi Shawn, > [...] > > Some notes: > > * let-optionals is also provided by the chicken.base module > > * define-optionals is also provided by the miscmacros egg > > I haven't checked if the syntax/semantics are the same as the > definitions of SRFI-227, though. > > The version of let-optionals and let-optionals* in this SRFI is a superset of the ones in (chicken base) - that one only accepts bindings with default arguments, the SRFI includes mandatory and rest arguments too. AFAIK it's backwards compatible with code using the chicken version.No idea about miscmacros. > Could you please add a link to the source repository to the > egg documentation? > Updated the wiki documentation with a link and that it replaces those macros from chicken base.
New egg: srfi-227
Implementation of the given SRFI (Optional Arguments, for easier writing of functions with, yes, optional arguments). Release-info: https://raw.githubusercontent.com/shawnw/chicken-srfi-227/master/srfi-227.release-info-5 Documentation: http://wiki.call-cc.org/eggref/5/srfi-227 test-new-egg report: srfi-227 (1 of 1) Fetching[ ok ] 0s Reading .egg[ ok ] 0s Checking dependencies...[ ok ] 0s Checking category...[ ok ] 0s Checking license[ ok ] 0s Checking author.[ ok ] 0s Installing..[ ok ] 16s Checking version[ -- ] Testing.[ ok ] 11s Checking documentation..[ ok ] 1s Removing /tmp/temp3b38.25779 Egg looks ok!
Re: [Chicken-users] CHICKEN 4.10.0 release candidate 1 available
Operating system: NetBSD 6.1.5 Hardware: x86-64 C compiler: Tested using the system gcc (4.5.3), and clang 3.6.0. Installation: Didn't check. Tests work: Yes. Installation of eggs: Didn't check. Turning on address space randomization in the kernel will randomly trigger illegal instruction errors in the test programs. I'll try to check OpenBSD in the next couple of days to see if it has the same issue, since I think Open, unlike Net, has its implementation of ASLR turned on by default. On Sun, 07 Jun 2015 17:16:07 +0200 Moritz Heidkamp mor...@twoticketsplease.de wrote: Hello everyone, we are happy to announce the first release candidate of the upcoming CHICKEN 4.10.0. It is now available at this location: http://code.call-cc.org/dev-snapshots/2015/06/07/chicken-4.10.0rc1.tar.gz The SHA 256 sum of that tarball is b5cc7c2d270d11f56a52da1b78950ada27d9bce2496b8ba230542d104b5477f0 The list of changes since version 4.9.0 is available here: http://code.call-cc.org/dev-snapshots/2015/06/07/NEWS Please give it a test and report your findings to the mailing list. -- Shawn Wagner sha...@speakeasy.org ___ Chicken-users mailing list Chicken-users@nongnu.org https://lists.nongnu.org/mailman/listinfo/chicken-users
Re: [Chicken-users] Idiomatic way to access nth element of a list
list-ref On Sun, 14 Dec 2014 20:08:09 +0330 Bahman Movaqar bah...@bahmanm.com wrote: How would a seasoned Schemer access the nth element of a list? (drop)? Does it have any performance penalty? TIA, -- Shawn Wagner sha...@speakeasy.org ___ Chicken-users mailing list Chicken-users@nongnu.org https://lists.nongnu.org/mailman/listinfo/chicken-users
Re: [Chicken-users] how to speed up my text filter?
Increasing the initial heap size to something big enough it doesn't need to do much or any GC (Something like csc -:hi500M -:hs0 foo.scm) might help. On Tue, 24 Sep 2013 18:35:10 -0400 Xin Zheng spiralzh...@gmail.com wrote: Hi all, I am a newbie to Chicken Scheme. Use compiled following filter, I am trying to filter a text file with 1 million lines. It took 10 seconds, while profiling showed that 90% time used on GC. I am wondering if any way to speed it up. Any help would be appreciated. Thanks, Zin (use chicken extras) (define args ( argv)) (define f (list-ref args 1)) (define in (open-input-file f)) (define out (open-output-file (list-ref args 2)) ) (define (process line) (if (eq? #\@ (string-ref line 0)) '() (let* ([eles (string-split line \t)] [ref (list-ref eles 2)] [id (list-ref eles 0)]) (if (eq? (string-ref ref 0) #\*) (write-line id out) (let loop ([l (read-line in)]) (if (eof-object? l) (write-line done (current-error-port)) (begin (process l) (loop (read-line in) (close-input-port in) (close-output-port out) -- Shawn Wagner sha...@speakeasy.org ___ Chicken-users mailing list Chicken-users@nongnu.org https://lists.nongnu.org/mailman/listinfo/chicken-users
