What are the differences between map, reduce, and filter in programming?

What are the differences between map, reduce, and filter in programming?

Map, reduce, and filter are higher-order functions in programming that operate on collections. Map transforms each element, reduce aggregates them, and filter selects elements based on a condition.

Can you give me an example of how each function works?

Sure! For map, if you have an array of numbers and want to double each, you'd use map. For filter, if you want to get only even numbers from that array, you'd use filter. For reduce, if you want to sum all the numbers, you'd use reduce.

Are these functions available in all programming languages?

Not all languages have built-in support for these functions, but many modern languages like JavaScript, Python, and Ruby do.

When should I use each of these functions?

Use map when you need to transform data, filter when you need to select specific data, and reduce when you need to aggregate data.