|Bill Allombert on Mon, 17 Nov 2014 18:49:53 +0100|
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|New GP function self() for recursive anonymous functions|
Dear PARI developers, I have added a GP function self() which allow to write recursive anonymous functions: ? (n->if(n==0,1,n*self()(n-1)))(5) %1 = 120 self() returns the calling function or closure. This is useful to avoid using global variables when using parallel GP: For example my(f(n)=if(n==0,1,n*self()(n-1))); parapply(f,[100..200]) is valid but f(n)=if(n==0,1,n*f()(n-1)) parapply(f,[100..200]) is not. Please tell me if it is useful to you. Cheers, Bill.