adjust

v0.9.6

STATUS

Passing

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VISIBILITY

Public

PUBLISHED

5 years ago

SIZE

1 KB

Applies a function to the value at the given index of an array, returning a

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adjust (

idx:Number,

fn:Function,

list:(Array | Arguments)

) : Array

Applies a function to the value at the given index of an array, returning a new copy of the array with the element at the given index replaced with the result of the function application.

Example

R.adjust(1, R.toUpper, ['a', 'b', 'c', 'd']);      //=> ['a', 'B', 'c', 'd']
     R.adjust(-1, R.toUpper, ['a', 'b', 'c', 'd']);     //=> ['a', 'b', 'c', 'D']

Arguments

idx: Number

The index.

fn: Function

The function to apply.

list: (Array | Arguments)

An array-like object whose value at the supplied index will be replaced.

Returns

Array

A copy of the supplied array-like object with the element at index `idx` replaced with the value returned by applying `fn` to the existing element.