How to use the constant function from lodash
Find comprehensive JavaScript lodash.constant code examples handpicked from public code repositorys.
Lodash.constant is a function that returns a new function that always returns the same value, regardless of the arguments passed to it.
6589 6590 6591 6592 6593 6594 6595 6596 6597 6598* @param {*} value The value to return from the new function. * @returns {Function} Returns the new function. * @example * * var object = { 'name': 'fred' }; * var getter = _.constant(object); * getter() === object; * // => true */ function constant(value) {
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64 65 66 67 68 69 70 71 72 73module.exports.concat = _.concat; module.exports.cond = _.cond; module.exports.conforms = _.conforms; module.exports.conjoin = _.conjoin; module.exports.cons = _.cons; module.exports.constant = _.constant; module.exports.countBy = _.countBy; module.exports.create = _.create; module.exports.curry = _.curry; module.exports.curry2 = _.curry2;
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How does lodash.constant work?
lodash.constant works by taking a value as input and returning a new function that always returns that value, regardless of the arguments passed to it.
When the returned function is called, it simply returns the original value without performing any calculations or operations.
This can be useful in situations where you need to provide a function that always returns a certain value, such as for setting default values or providing a placeholder function.
By returning a new function that always returns the same value, you can simplify your code and avoid the need for repetitive, boilerplate functions.
GitHub: mdmarufsarker/lodash
886 887 888 889 890 891 892 893 894 895 896 897console.log(bindAll); // => { 'increment': [Function: increment], 'square': [Function: square] } const cond = _.cond([ [_.matches({ 'a': 1 }), _.constant('matches A')], [_.conforms({ 'b': _.isNumber }), _.constant('matches B')], [_.stubTrue, _.constant('no match')] ]); console.log(cond({ 'a': 1, 'b': 2 })); // => 'matches A' const constant = _.constant(1);
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GitHub: pappukrs/nodash-lib
529 530 531 532 533 534 535 536 537 538 539// console.log(key); // }); // function Foo() { // this.a = lodash.constant("a"); // this.b = lodash.constant("b"); // this.c = lodash.constant("c"); // } // Foo.prototype.d = lodash.constant("d");
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Ai Example
1 2 3 4 5 6 7 8const _ = require("lodash"); // Create a function that always returns the value 42 const constantFunction = _.constant(42); console.log(constantFunction()); // 42 console.log(constantFunction(1, 2, 3)); // 42 console.log(constantFunction("hello")); // 42
In this example, we use the lodash.constant function to create a new function that always returns the value 42. We pass the value 42 as the argument to lodash.constant, which returns a new function that always returns 42 regardless of the arguments passed to it. We assign this new function to the variable constantFunction. We then call constantFunction with various arguments, but no matter what arguments we pass, the function always returns 42. The resulting output to the console shows that the function always returns the value 42 regardless of the arguments passed to it.
GitHub: sindeshiva/Test
232 233 234 235 236 237 238 239 240 241requestId, retryIntervals, delaysRemaining, retryOnStatusCodeFailure, retryFn: retry, onEnd: _.constant(res), }) }) }
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38 39 40 41 42 43 44 45 46 47 48[_.isBuffer, 'buffer'], [_.isDate, 'date'], [_.isObject, 'object'], [_.stubTrue, 'unknown'], ], ([fn, type]) => { return [fn, _.constant(type)] }) module.exports = { warning (msg) {
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