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Lodash _.minBy

Overview

The lodash _.minBy method is a versatile utility function that is commonly used in JavaScript programming. _.minBy takes an array of objects and a callback function as arguments, and returns the object from the array that has the smallest value returned by the callback function.

The syntax for _.minBy is as follows:

_.minBy(array, callback)

The first argument, "array", is the array of objects to be searched. The second argument, "callback", is the function that is called on each iteration of the array to determine the value used for comparison. This function should return a value that can be compared using the less than operator (<).

_.minBy returns the object from the array that has the smallest value returned by the callback function. If multiple objects have the same smallest value, the first one encountered in the array is returned.

Here's an example of how to use _.minBy:

const people = [
  { name: 'Alice', age: 25 },
  { name: 'Bob', age: 30 },
  { name: 'Charlie', age: 20 },
];

const youngestPerson = _.minBy(people, person => person.age);

console.log(youngestPerson); // { name: 'Charlie', age: 20 }

In this example, we have an array of person objects. We use _.minBy to find the person with the smallest age property. The callback function simply returns the age property of each person object. The result is an object representing the youngest person in the array.

_.minBy is a very powerful utility function that can be used in a wide variety of scenarios. It is extremely useful when working with complex data sets or when dealing with large amounts of data. In addition, it is often more efficient than writing manual loops for comparison purposes.