A strange div bug on Linux x86_64, (both dmd & ldc2): long -5000 / size_t 2 = 9223372036854773308
mingwu at gmail.com
Thu Aug 13 19:40:28 UTC 2020
On Thursday, 13 August 2020 at 19:24:11 UTC, Tove wrote:
> One should always use unsigned whenever possible as it
> generates better code, many believe factor 2 is simply a shift,
> but not so on signed.
I'm fine with that. In many area of the language design, we need
to make a choice between: correctness v.s. raw performance.
But at least we also need *explicit* visible warning message
after we've made that choice:
-- especially warnings about *correctness* when the choice was
made favoring performance
-- if the choice was made favoring correctness, user will notice
the performance when the program runs.
Personally, I will favor correctness over performance in my
program design decisions: make it correct first, and faster
later; you never know before-hand where your program's bottleneck
I'm sure you know the famous quote:
"Premature optimization is the root of all evil!"
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