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lodash.once

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    lodash.once

The lodash method `_.once` exported as a module.


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3
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Package description

What is lodash.once?

The lodash.once package is a utility that allows you to create a function that can only be called once. After the first call, subsequent calls to the function will return the result of the first call without executing the function again. This is useful for initializing resources or other actions that should only happen once.

What are lodash.once's main functionalities?

Creating a function that can only be called once

This feature allows you to create a function that will only execute its body once and will return the result of the first execution on subsequent calls.

const once = require('lodash.once');
const initialize = once(() => {
  console.log('Initialization complete.');
  return 'Initialized';
});

console.log(initialize()); // Output: Initialization complete.
console.log(initialize()); // Output: Initialized (without logging 'Initialization complete.' again)

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Source

lodash.once v4.1.1

The lodash method _.once exported as a Node.js module.

Installation

Using npm:

$ {sudo -H} npm i -g npm
$ npm i --save lodash.once

In Node.js:

var once = require('lodash.once');

See the documentation or package source for more details.

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Last updated on 13 Aug 2016

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