findFirst

lib.findFirst

Docs pulled from | This Revision | 10 minutes ago

Find the first element in the list matching the specified predicate or return default if no such element exists.

Inputs

pred: Predicate
default: Default value to return
list: Input list

Type

findFirst :: (a -> bool) -> a -> [a] -> a

Examples

`lib.lists.findFirst` usage example

findFirst (x: x > 3) 7 [ 1 6 4 ]
=> 6
findFirst (x: x > 9) 7 [ 1 6 4 ]
=> 7

(lib.lists.findFirst)

Noogle detected

Aliases

lib.lists.findFirst

Implementation

The following is the current implementation of this function.

findFirst =
    pred: default: list:
    let
      index = findFirstIndex pred null list;
    in
    if index == null then default else elemAt list index;