Build lodash.pick from Scratch

Jamund Ferguson
InstructorJamund Ferguson

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_.pick and its sibling _.omit are popular utilities which apply filter-like functionality to objects. This lesson will demonstrate two different techniques for building the functionality found in _.pick.

  1. Using for...of to loop through the keys array
  2. Using to loop through the target object

This lesson will also cover how to emulate _.pick's support for either an array or multiple arguments for the picked keys using Rest params and Array.prototype.flat().