[racket-users] Re: Why would delete-file fail without throwing?

2016-11-19 Thread David K. Storrs
On Saturday, November 5, 2016 at 3:05:04 PM UTC-7, David K. Storrs wrote: > I've got this little snip of code:  > > > > > (define p "/tmp/foo/bar-28") > > (file-exists? p)  ; #t > (delete-file p) > (file-exists? p)  ; still #t  ?? > > > I've verified that: > > *) It's not throwing an excep

Re: [racket-users] list-free syntax

2016-11-19 Thread Dmitry Pavlov
Without the macro, the last line would have been (some-func ((parameter-1) some-arg) The question comes when you would have used (parameter-1) in a higher-order context. Do you want it to be equivalent to (parameter-1), or equivalent to (lambda (arg ...) ((parameter-1) arg ...)) ? In your s

Re: [racket-users] list-free syntax

2016-11-19 Thread Dmitry Pavlov
On 11/20/2016 12:04 AM, Dmitry Pavlov wrote: On 11/19/2016 11:45 PM, Alex Knauth wrote: On Nov 19, 2016, at 1:51 PM, Dmitry Pavlov wrote: Out of curiosity, why do you want this? I have a bunch of parameters (in the Racket sense of the word) that are "read-only" throughout the module,

Re: [racket-users] list-free syntax

2016-11-19 Thread Dmitry Pavlov
On 11/19/2016 11:45 PM, Alex Knauth wrote: On Nov 19, 2016, at 1:51 PM, Dmitry Pavlov wrote: Out of curiosity, why do you want this? I have a bunch of parameters (in the Racket sense of the word) that are "read-only" throughout the module, i.e. there are no modifications via calls (para

Re: [racket-users] list-free syntax

2016-11-19 Thread Alex Knauth
> On Nov 19, 2016, at 1:51 PM, Dmitry Pavlov wrote: > >> Out of curiosity, why do you want this? > > I have a bunch of parameters (in the Racket sense of the word) > that are "read-only" throughout the module, i.e. there are no > modifications via calls (parameter value). > > Most of parameter

[racket-users] Re: dynamic-require of a string

2016-11-19 Thread byrondavies
I was going to post a similar request a few days ago -- until I discovered include. https://docs.racket-lang.org/reference/include.html?q=include#%28form._%28%28lib._racket%2Finclude..rkt%29._include%29%29 On Friday, November 18, 2016 at 5:38:53 PM UTC-7, Dan Liebgold wrote: > I have an odd use

[racket-users] Re: Testing - mails sent from desktop mail client not received

2016-11-19 Thread Tim Johnson
On Friday, November 18, 2016 at 5:27:37 PM UTC-9, gneuner2 wrote: > On Fri, 18 Nov 2016 21:20:24 -0500, George Neuner > wrote: > > >You can send directly to racket-users@googlegroups.com > > > Ok, that was interesting. I wrote: > >racket-users at googlegroups dot com > > and it appears t

Re: [racket-users] list-free syntax

2016-11-19 Thread Dmitry Pavlov
Out of curiosity, why do you want this? I have a bunch of parameters (in the Racket sense of the word) that are "read-only" throughout the module, i.e. there are no modifications via calls (parameter value). Most of parameters' values are themselves functions. So what I wanted to save a cou

Re: [racket-users] list-free syntax

2016-11-19 Thread David Storrs
Out of curiosity, why do you want this? On Sat, Nov 19, 2016 at 9:08 AM, Dmitry Pavlov wrote: > Alex, > > > Using that your macro would be: >> >> (define-syntax call-my-func >> (make-variable-like-transformer #'(my-func))) >> > > Perfect solution, thank you! > > I read about make-rename-transf

Re: [racket-users] list-free syntax

2016-11-19 Thread Dmitry Pavlov
Alex, Using that your macro would be: (define-syntax call-my-func (make-variable-like-transformer #'(my-func))) Perfect solution, thank you! I read about make-rename-transformer, but make-variable-like-transformer escaped me. Best regards, Dmitry -- You received this message because y

Re: [racket-users] list-free syntax

2016-11-19 Thread Alex Knauth
> On Nov 19, 2016, at 5:33 AM, Dmitry Pavlov wrote: > > OK, it seems that I have found the way: > > (define-syntax (call-my-func stx) > (syntax-parse stx >[x:id #'(my-func)] >[(x:id) #'((my-func))] >[(x:id arg ...) #'((my-func) arg ...)]) >) > > It suits my nee

Re: [racket-users] list-free syntax

2016-11-19 Thread Dmitry Pavlov
OK, it seems that I have found the way: (define-syntax (call-my-func stx) (syntax-parse stx [x:id #'(my-func)] [(x:id) #'((my-func))] [(x:id arg ...) #'((my-func) arg ...)]) ) It suits my needs, although is not as simple as would be a "replace call-my-func with

[racket-users] list-free syntax

2016-11-19 Thread Dmitry Pavlov
Hello, I was wondering how I can define a macro that acts without parentheses. Here is what I came up with: (define (my-func) "abc") (define-syntax (call-my-func stx) (syntax-case stx () (_ #'(my-func It was fine at the first glance: call-my-func "abc" But then I tried (ca