mirror of
https://github.com/taixingyiji/openit.git
synced 2025-11-04 00:12:23 +00:00
26 lines
665 B
JavaScript
26 lines
665 B
JavaScript
var before = require('./before');
|
|
|
|
/**
|
|
* Creates a function that is restricted to invoking `func` once. Repeat calls
|
|
* to the function return the value of the first invocation. The `func` is
|
|
* invoked with the `this` binding and arguments of the created function.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @since 0.1.0
|
|
* @category Function
|
|
* @param {Function} func The function to restrict.
|
|
* @returns {Function} Returns the new restricted function.
|
|
* @example
|
|
*
|
|
* var initialize = _.once(createApplication);
|
|
* initialize();
|
|
* initialize();
|
|
* // => `createApplication` is invoked once
|
|
*/
|
|
function once(func) {
|
|
return before(2, func);
|
|
}
|
|
|
|
module.exports = once;
|