Understanding slices in Golang

[@abhim6380]

Why can't you just use the array instead of slice with make, if you know the size?

[@nishantrao5600]

I dont see the point of the capacity function yet. Where is it actually useful?

[@FrequenciaJogos]

But what is the benefit of using a capacity? It will grow up if exceed, I don’t get the point. The size is ok, you say the slice will hold X values. But, the capacity, I don’t understand the advantage.

[@rajbirbhattacharjee905]

This is similar to the vector implementation in C++. Arrays that can grow. Every time you add an element, it is a O(1) operation till you reach the capacity, at which point it becomes O(n) for the next insert.

[@brownbearnishant]

what if we don't know how much number of elements the slice is going to take in what to do for that???

[@leon_forte]

Maybe append instead

[@LuaneCarolineAquinoCavalcanti]

Thank you, I was very clear to understand

[@toddmcleod-learn-to-code]

I am glad it helped you!