intersperse-iterable

Interjects a value between each iterated item.

Installation

Requires Node.js 6.0.0 or above.

npm i intersperse-iterable

API

The module exports a single function.

Parameters

1. Bindable: iter (iterable)
2. Optional: separator (function or any): A value to interleave between each item iterated by iter, or a callback that generates such a value. If separator is a function, it will be passed four arguments: the index of the first item, the first item itself, the index of the second item, and the second item itself. The callback’s return value will be inserted between the first and second items.

Return Value

An iterator which yields the values from iter, interleaved with values as determined by separator.

Example

const intersperse = require('intersperse-iterable')

const iter1 = intersperse(['work', 'work'], 'break')
Array.from(iter1) // ['work', 'break', 'work']

const iter2 = intersperse([1, 3, 5], (index1, value1, index2, value2) => value1 + value2)
Array.from(iter2) // [1, 4, 3, 8, 5]

// Supports the bind operator
const iter3 = [1, 2, 3]::intersperse((i1, val1) => val1 + 0.5)
Array.from(iter3) // [1, 1.5, 2, 2.5, 3]

Related

• intersperse-array