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A page about the map functional programming function

The map method creates a new collection with the results of calling a provided function on every element in the collection.

The map operation produces one output value per input value.

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Example

from the map function of a javascript array

• An array of number that we want to double.

const numbers = [1, 2, 3, 4, 5];

• The Array Map function with an Arrow function as argument

const doubled = numbers.map((number) => number * 2);
console.log(doubled);