How to use the ary function from lodash

Find comprehensive JavaScript lodash.ary code examples handpicked from public code repositorys.

lodash.ary is a function that creates a new function that limits the number of arguments passed to the provided function.

lodash-contrib.commonjs.js

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module.exports.add                 = _.add;
module.exports.addContrib          = _.addContrib;
module.exports.after               = _.after;
module.exports.always              = _.always;
module.exports.arity               = _.arity;
module.exports.ary                 = _.ary;
module.exports.assign              = _.assign;
module.exports.assignIn            = _.assignIn;
module.exports.assignInWith        = _.assignInWith;
module.exports.assignWith          = _.assignWith;

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+ 92 other calls in file

utils.js

GitHub: jared-hughes/adventofcode

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// parseInt("1100", 2) => 12


module.exports = {
  sort: arr => _.sortBy(arr, x=>x),
  // fixes headache in past due to arr.map(parseInt) applying parseInt(element, index, array)
  // Ooh this would be same as _.ary(parseInt, 1)
  int: s => parseInt(s, 10),
  // faster to type and return starting value. I would use log except it looks too much like Math.log
  print: e => {console.log(e); return e},
  clog: console.log,

+ 2 other calls in file

How does lodash.ary work?

The lodash.ary function creates a new function that wraps the given function, limiting the arguments passed to it to the specified arity (number of expected arguments) and discarding any additional arguments beyond that.

lodash.js

GitHub: mdmarufsarker/lodash

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// Function


const after = _.after(2, () => console.log('hello'));
after();


const ary = _.ary(Math.max, 1);
console.log(ary(1, 2, 3)); // => 1


const before = _.before(2, () => console.log('hello'));
before();

+ 15 other calls in file

rabbitmq-publisher.js

GitHub: everscale-contest/devex

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    return this.channel.assertExchange(
        exchange.name,
        exchange.type,
        exchange.opts,
        _.ary(cb, 1)
    );
},

(cb) => {

Ai Example

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const _ = require("lodash");

function myFunc(a, b, c) {
  console.log(a, b, c);
}

const myFuncTwo = _.ary(myFunc, 2);
myFuncTwo("one", "two", "three");
// Output: "one two undefined"

In the example, the myFunc function takes three parameters but we only want to pass two parameters to it. We can use lodash.ary to create a new function that only accepts two parameters and then call that new function.

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