At worst it will make it slower, and at best it will make it faster[0]. The only way to know is to measure with an input that's representative, and this case is

At worst it will make it slower, and at best it will make it faster[0]. The only way to know is to measure with an input that's representative, and this case is exactly why you measure. [0] https://stackoverflow.com/questions/48535727/why-are-c-stl-vectors-1000x-slower-when-doing-many-reserves https://stackoverflow.com/questions/48535727/why-are-c-stl-v...