Stop show with sound -- Keyboard shortcut: 'x'  Next slide in show -- Keyboard shortcut: 'n'  2 minutes, 5 secondsHigher-order Functions - slide 11 : 34

A filtering function applies a predicate (boolean function) on every element of a list. Only elements on which the predicate returns true are returned from the filtering function.

The function filter is not an essential Scheme function - but is part of the LAML general library