3 ms·
> I doubt this library is useful It is. > Additionally, it may slow down the resulting code. FUD.
by jen20 4y ago
> I doubt this library is useful
It is.
> Additionally, it may slow down the resulting code.
FUD.
- valyala 4y agoAgreed, it's my fault that I didn't explain why maps.DeleteFunc() can be slower than a simple loop with "if" statement inside. The reasons for the slowdown are: - Go compiler may fail to inline the callback passed to the maps.DeleteFunc(). This will result into an additional overhead for callback calls per each item in the map. - Go compiler may move some variables inside the callback from stack to a heap. This will result in an additional memory allocations comparing to a simple loop, leading to an additional load on garbage collector.