product({...},Function) -- product of values of a function

product({...},Function) -- product of values of a function

Synopsis:

Function: product

Input:

an instance of class List.

an instance of class Function.

product(v,f) -- yields the product of the expressions obtained by applying f to each of the elements of the list or sequence v.

i1 : product(1 .. 5, i -> i^2)



o1 = 14400

See also:

product

Code:

     -- ../../../Macaulay2/m2/lists.m2:76-82
     product(ZZ,Function) := (n,f) -> (
          s := 1;
          g := x -> (
               s = f x; 
               g = x -> s = s * f x);
          scan(n,x -> g x);
          s);