You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
26 lines
665 B
26 lines
665 B
2 years ago
|
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;
|