find

v0.9.6

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Passing

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Public

PUBLISHED

5 years ago

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1 KB

Returns the first element of the list which matches the predicate, or `undefined` if no element matches.

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find (

fn:Function,

list:Array

) : Object

Returns the first element of the list which matches the predicate, or undefined if no element matches.

Dispatches to the find method of the second argument, if present.

Acts as a transducer if a transformer is given in list position.

Example

const xs = [{a: 1}, {a: 2}, {a: 3}];
     R.find(R.propEq('a', 2))(xs); //=> {a: 2}
     R.find(R.propEq('a', 4))(xs); //=> undefined

Arguments

fn: Function

The predicate function used to determine if the element is the desired one.

list: Array

The array to consider.

Returns

Object

The element found, or `undefined`.