sum({...},Function) -- sum results of applying a function

sum({...},Function) -- sum results of applying a function

Synopsis:

Function: sum -- compute the sum

Input:

an instance of class List.

an instance of class Function.

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

i1 : sum(1 .. 10, i -> i^2)



o1 = 385

See also:

sum -- compute the sum

Code:

     -- ../../../Macaulay2/m2/lists.m2:59-65
     sum(ZZ,Function) := (n,f) -> (
          s := 0;
          g := x -> (
               s = f x; 
               g = x -> s = s + f x);
          scan(n,x -> g x);
          s);