Name
list::reduce — Reduces a list to a single value.
Synopsis
flex1
list::reduce
( |
flex1
x
, |
| |
flex1
y
, |
| |
list<flex1>
list
, |
| |
block<flex1>
expression
); |
Parameters
-
flex1
x
-
flex1
y
-
list<flex1>
list
-
block<flex1>
expression
Description
Apply expression cumulatively to the values of the list, from left to right, to reduce the list to a single value. See http://en.wikipedia.org/wiki/Reduce_(higher-order_function) for a detailed explanation.
In this version the initial value is the first value of the list. Thus the list must not be empty.
Usage
list::reduce (integer x, integer y, [2, 4, 6], { return x < y ? x : y; }) -> 2
list::reduce (integer x, integer y, [2, 4, 6], { return x > y ? x : y; }) -> 6
