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Jacques Gélinas on Mon, 25 Feb 2019 22:30:10 +0100
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RE: Getting arity of closures
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- To: "pari-users@pari.math.u-bordeaux.fr" <pari-users@pari.math.u-bordeaux.fr>
- Subject: RE: Getting arity of closures
- From: Jacques Gélinas <jacquesg00@hotmail.com>
- Date: Mon, 25 Feb 2019 21:30:06 +0000
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- Thread-topic: Getting arity of closures
>It would seem to me that this should work:
> ? install("closure_arity","lG")
Nice solution, but does not work for some builtins.
vc = vector;
vc(1,k,k)
*** at top-level: vc(1,k,k)
*** ^---------
*** too many parameters in user-defined function call.
closure_arity(vc) == 2
alias(v,vector)
v(1,k,k) == [1]
closure_arity(v) == 2
\\ This was discussed in
\\ http://pari.math.u-bordeaux.fr/archives/pari-users-1712/msg00029.html
\\ What is the meaning of
closure_arity(anything) == 4612530443357519872
Jacques Gélinas