Function map-apply

map-apply aFunction aList

Repeatedly executes a function.

Parameters:

aFunction - A function object.

aList - A list where each element is also a list. The elements in these list will be passed as arguments to aFunction each time it is called.

Returns:

A list containing the successive return values of aFunction.

Invokes aFunction as many times as the number of elements in aList. The elements of aList are lists. Each time aFunction is called it will be passed as arguments the elements of one of the lists contained in aList.

The map-apply function could be defined as follows:

define map-apply ( aFunction aList ) {
    map [lambda (x) { apply $aFunction $x }] $aList
}