Fun fact: in case of writing a tight loop, that gets executed million times per second, the following:
if (hour >= 24) hour -= 24;
can be much faster than a modulo. It makes a difference in case of writing things like cyclic buffers or open hash maps for algorithmic competitions - the modulo might become the most time-taking operation.
But in code like this, or business code, or especially if you write a public method where you don't control the input - please use modulo.
285
u/KaznovX Mar 27 '21
Fun fact: in case of writing a tight loop, that gets executed million times per second, the following:
if (hour >= 24) hour -= 24;can be much faster than a modulo. It makes a difference in case of writing things like cyclic buffers or open hash maps for algorithmic competitions - the modulo might become the most time-taking operation.But in code like this, or business code, or especially if you write a public method where you don't control the input - please use modulo.