Re:C++ is faster and safer than Rust (2020)
by makapuf on Saturday October 09, 2021 @04:15AM
(#28807975)
That is increment a part, for whatever is being defined as incrementing for this class. If you define different things for post and pre increment they will cost differently, sure. If the compiler decides to do more than what I told to, it will be longer. But will a++ always cost more than ++a?
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Re:C++ is faster and safer than Rust (2020)
by jcelerier on Sunday October 10, 2021 @06:29AM
(#28817294)
> If you define different things for post and pre increment
They are defined as different things. One returns the current value and increments, the second increments the current value and returns it. In the first case you have to cache the previous value, in the second you don't. If your operators don't do that they are bugged and wrong.