Function object

A function object is like a little helper that knows how to do a specific thing. Imagine you have a bunch of toys to put away in different boxes. Each box has a label that tells you what kind of toy goes in it - like cars or dolls or blocks. Now, imagine you have a friend who knows exactly which toy goes in which box without looking at the label. They have a special superpower that helps them remember.

In computer programming, we can create a function object that's like your friend. We give it a special name and tell it how to perform a specific task - like sorting a list of numbers, counting the number of times a word appears in a text, or calculating the average temperature of a week. Then, we can use this function object whenever we need to perform that task.

For example, if we have a list of numbers that we want to sort, we can use the function object that knows how to do this instead of sorting the list manually. We just call the function object by its name, and it sorts the list for us. This saves us time and effort.

Just like your friend who knows where all the toys go, a function object can be really helpful when we have lots of things to do and want to avoid doing them by hand.