array-peek
v1.0.232
Published
peek functionality for arrays, allow execution of functionality for each element of the array and continue procesing of the same
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Readme
extend array functionality to allow peek method.
peek vs forEach
peek
as forEach
allows you to execute a callback on each of the elements of an array, not affecting the content of itself.
The difference is that forEach
returns void so no further processing can be done, while peek
will return the array so you can continue the transformations necesary for your processing
Installation
add it to your project using npm install array-peek --save
or yarn add array-peek
Usage
to use this package just add it before the usage of any array to extend its prototype. From then on you will have access to the peek function as seen in the next example.
require('array-peek')
[1,2,3]
.peek(console.log)
.map((value) => value * value)
.peek(console.log)
// Output:
//> 1
//> 2
//> 3
//> 1
//> 4
//> 9