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iOS

Posted by jon kelson
jon kelson
5,149 Points

What is nesting and why do we use it

Hi I'm doing swift and wanted to know what nesting is used for .

Thanks

1 Answer

Steven Deutsch
Steven Deutsch
21,046 Points

Hey jon kelson,

Your question is very vague because nesting can refer to a lot of different things. You can have nested types, nested functions, nested dictionaries...

It all comes down to scope and encapsulation. Sometimes it doesn't make sense to expose information to other parts of the code that will never need access to it. For example, a function thats only ever used inside of another function. If the rest of the code doesn't need to know about it, then don't let it access it.

Good Luck

jon kelson
jon kelson
5,149 Points

Ok thanks Steven . Sorry about the vagueness . I saw some code, that was a Dictionary and also an array , they mentioned nesting but didn't say what it meant .

Many thanks Jon