fold(Function,Thing,VisibleList) -- apply binary operator repeatedly

fold(Function,Thing,VisibleList) -- apply binary operator repeatedly

Synopsis:

Function: fold -- apply binary operator repeatedly

Input:

an instance of class Function.

an instance of class Thing.

an instance of class VisibleList.

Output:

an instance of class VisibleList.

fold(f,x0,{x1,...,xn}) -- computes f(...f(f(x0,x1),x2)...)}.

i1 : fold(identity, a, {b,c,d,e})



o1 = ((((a, b), c), d), e)



o1 : Sequence

Code:

     -- ../../../Macaulay2/m2/fold.m2:14
     fold(Function,Thing,VisibleList) := VisibleList => (f,x,v) -> (scan(v, y -> x = f(x,y)); x)