Home - News ( United States | United Kingdom | Italy | Germany ) - Football scores

Showing content from https://www.geeksforgeeks.org/javascript/lodash-_-memoize-method/ below:

Lodash _.memoize() Method - GeeksforGeeks

Last Updated : 03 Sep, 2024

Lodash _.memoize() method is used to memorize a given function by caching the result computed by the function. If the resolver is issued, the cache key for storing the result is determined based on the arguments given to the memoized method. By default, the first argument provided to the memoized function is used as the map cache key.

_.memoize(func, [resolver]);

• func: This parameter holds the function to have its output memoized.
• resolver: It is the function to resolve the cache key.

• This method returns the new memoized function. 

Example 1: In this example, we are printing the sum of the first 6 natural numbers by the use of the _.memoize() method.

// Requiring the lodash library  
const _ = require("lodash");

// Use of _.memoize() method  
let sum = _.memoize(function (n) {
    return n < 1 ? n : n + sum(n - 1);
});

// Sum of first 6 natural number  
console.log(sum(6)); 

Output:

21

Example 2: In this example, we are printing the values of the object by the use of the _.memoize() method.

// Requiring the lodash library  
const _ = require("lodash");

let object = { 'cpp': 5, 'java': 8 };

// Use of _.memoize() method  
let values = _.memoize(_.values);

// value of object 
console.log(values(object));

// Modify the result cache.
values.cache.set(object, ['html', 'css']);
console.log(values(object)); 

Output:

[5, 8]
['html', 'css']

RetroSearch is an open source project built by @garambo | Open a GitHub Issue

Search and Browse the WWW like it's 1997 | Search results from DuckDuckGo

HTML: 3.2 | Encoding: UTF-8 | Version: 0.7.4