With the help of _.iterators.accumulate(iter, binaryFn) method, we can get the new iterator function which when called will iterate the next step with iter and generate the value by using binaryFn.
Syntax:
_.iterators.accumulate(iter, binaryFn)
Return: Return the iterator function which will generally result in an accumulated Binary function.
Example 1: In this example, we can see that by using _.iterators.accumulate(iter, binaryFn) method, we are able to get the function iterator which will return the value by using the accumulated binary function.
javascript
// Defining underscore contrib variableconst _ = require('underscore-contrib');let iter = _.iterators.List(["Geeks", "for", "Geeks"]);function calculateLength(geeky, element) { return element.length;}let gfg = _.iterators.accumulate(iter, calculateLength, 0);for (let i = 0; i < 3; i++) { console.log(gfg());} |
Output:
5 3 5
Example 2: In this example, we will see the use of _.iterators.accumulate(iter, binaryFn) method.
javascript
// Defining underscore contrib variableconst _ = require('underscore-contrib');let iter = _.iterators.List(["A", "AB", "ABC", "AB", "A"]);function calculateLength(geeky, element) { return element.length;}let gfg = _.iterators.accumulate(iter, calculateLength, 0);for (let i = 0; i < 5; i++) { console.log(gfg());} |
Output:
1 2 3 2 1
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