What are higher-order functions and how are they used in different programming languages?
Higher-order functions are functions that can take other functions as arguments or return them as results. They are widely used in languages like JavaScript, Python, and Haskell.
Can you give me an example of a higher-order function in JavaScript?
Sure! In JavaScript, the map
function is a higher-order function. It takes a function as an argument and applies it to each element in an array, returning a new array.
What about in Python?
In Python, the filter
function is a higher-order function. It takes a function and an iterable, returning a new iterable with elements that satisfy the function's condition.
Are there any languages that don't support higher-order functions?
Most modern programming languages support higher-order functions, but some older languages, especially those that are not functional in nature, may not have this feature.
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