alexandria-devel

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184 discussions

[alexandria-devel] Bug in gaussian-random
by Andy Peterson 16 Feb '14

16 Feb '14

Hello, Four months ago, I reported a bug in gaussian-random when either optional parameter min or max is nil but not both are nil. The docstring has been modified since then but the code is still the same and the bug remains. In such a situation it is possible to enter an infinite loop. This is easy to demonstrate by the call (gaussian-random 0 nil). You may need to repeat the call a few times because the bug depends on the values returned by the first call to the local function gauss. An infinite loop will occur if gauss returns a negative number. I have attached a patch which fixes the bug. Sincerely, Andy Peterson

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[alexandria-devel] flatten depth param
by Garrett Kolpin 23 Feb '13

23 Feb '13

Hi, I've found it useful to be able to specify a depth when flattening a list structure. The attached patch adds a :to-depth keyword parameter to the flatten function. For instance, (flatten '((a b) (c (d)) :to-depth 1) => (a b c (d)) Is this something that could be added? Thanks, -Garrett

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[alexandria-devel] Add SUBDIVIDE to alexandria
by Rolando Pereira 29 Jan '13

29 Jan '13

Hello all, What are the odds of adding this[1] implementation of SUBDIVIDE to alexandria? I understand that alexandria only accepts public domain code, but I think that Robert Smith also follows this mailist so maybe he would let the code be added to alexandria. SUBDIVIDE is a function that divides a sequence into parts with a certain size, and returns a list with those parts. Best Regards, Rolando Pereira --- Links: [1] - https://bitbucket.org/tarballs_are_good/qtility/src/423519bbe130/sequence.l…

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[alexandria-devel] Adding a taste of Scheme to CL
by Pierre Thierry 27 Jan '13

27 Jan '13

Hi, after having followed SICP, I have been irremediably hooked on Scheme's let, so I added it to my macros. IIRC, I borrowed this implementation form SBCL's NAMED-LET (it's so short, it's hard to tell). I also heavily use a cataphoric IF, which I will now replace by the single-binding IF-LET, now that I know it exists. I thought it would be nice if LET@ was available in Alexandria with the other binding macros. Regards, Pierre

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[alexandria-devel] More open development
by Faré 26 Jan '13

26 Jan '13

On Sat, Jan 26, 2013 at 9:14 AM, Nikodemus Siivola <nikodemus(a)random-state.net> wrote: > On 6 November 2012 07:26, Faré <fahree(a)gmail.com> wrote: > >> And/or I want another library in which utilities can be speedily updated. > > Speed of evolution is an explicit non-goal for Alexandria. Also, > please don't hijack threads. > Maybe alexandria needs more people with commit rights? Or else, maybe we need a different reference library that will have a more open development style. —♯ƒ • François-René ÐVB Rideau •Reflection&Cybernethics• http://fare.tunes.org Government's view of the economy could be summed up in a few short phrases : If it moves, tax it. If it keeps moving, regulate it. And if it stops moving, subsidize it. — Ronald Reagan (1986)

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[alexandria-devel] multiple values in switch clauses
by Marco Baringer 26 Jan '13

26 Jan '13

hi, i'd like switch to, just like case and typecase do, allow multiple values in the 'value' position of the condition: (switch (foo) ((bar baz) ...)) So the attached patch checks for the key form being a cons and, if so, expands into a (member value :test test) instead of (test value) form. Of course, this means that your key values can no longer be forms, so this may break existing code. I don't have any code which actually uses a function call in the value form of the clause (and a quick grep over my locally installed lisp libs shows nobody else does either), so i'm ok with the change, but i can understand if others don't agree. -- -marco

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[alexandria-devel] parse-ordinary-lambda-list
by Faré 26 Jan '13

26 Jan '13

An important missing information that parse-ordinary-lambda-list fails to return is whether there was a &key keyword. If I submit a patch to add that as an additional returned value, will it be integrated? —♯ƒ • François-René ÐVB Rideau •Reflection&Cybernethics• http://fare.tunes.org The American diplomat to the Russian: "My country too is free: in the USA too anyone may freely publish the dirty little secrets of president Medvedev!"

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[alexandria-devel] spelling mistake on http://common-lisp.net/project/alexandria/
by Michael Stevens 26 Jan '13

26 Jan '13

Hi. http://common-lisp.net/project/alexandria/ has a reference to "draft documantion exists" when it probably means "draft documentation" exists? Michael

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[alexandria-devel] if-let*
by Marco Baringer 26 Jan '13

26 Jan '13

(i think i've already sent this, but it hasn't shown up on the list, sorry if you get it twice) hi, i recently needed (or just decided that i wanted it) a version of if-let with sequential binding. The bindings form is as with if-let, however to ensure that only the 'true' bindings are seen in the else form (and i'm not convinced this is worth it) the else form is repeated multiple times (once per binding) in the macro's expansion. the docstring should explain how it works (and if not i'll fix the docstring). and, since it made sense to me at the time, when-let and when-let* are implemented in terms of if-let and if-let* (instead of repeating the binding expansion and and code). -- -marco

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[alexandria-devel] [Patch]: Fix an example in the docstring of iota.
by Stas Boukarev 26 Jan '13

26 Jan '13

An example in the docstring of iota was (iota 4) => (0 1 2 3 4) while it should've been (iota 4) => (0 1 2 3). -- With best regards, Stas.

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