Random Lodash Pearls

by Vitor Fernandes — on  , 

Collection operations never cease to amaze me! From SQL to .Net’s Linq to now JavaScript’s Lodash provide some awesome tools to manipulate them.

Just came across these 2 simple examples from the Lodash docs related to random operations:

_.random

Generates a random number.

_.random(0, 5);
// an integer between 0 and 5

_.random(5);
// also an integer between 0 and 5

_.random(1.2, 5.2);
// a floating-point number between 1.2 and 5.2

_.sample

Returns a random element from a collection.

_.sample([1, 2, 3, 4]);
// returns a random element, for instance: 2

_.sampleSize

Returns a group of random elements from a collection.

_.sampleSize([1, 2, 3, 4], 2);
// returns 2 random elements, for instance: [3, 1]

These examples are trivial, and yet they make life so much easier when we need random things.

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