Most performant way of converting int to string
Minas Mina via Digitalmars-d-learn
digitalmars-d-learn at puremagic.com
Wed Dec 23 23:53:05 PST 2015
On Wednesday, 23 December 2015 at 22:29:31 UTC, Andrew Chapman
> On Wednesday, 23 December 2015 at 11:46:37 UTC, Jakob Ovrum
>> On Wednesday, 23 December 2015 at 11:21:32 UTC, Jakob Ovrum
>>> Dynamic memory allocation is expensive. If the string is
>>> short-lived, allocate it on the stack:
>> See also std.conv.toChars for stringifying lazily/on-demand.
> Thanks Jakob! I did try toChars but I couldn't quite figure
> out a syntax of calling it that the compiler was happy with.
> From memory I tried things along the lines of:
> string v = toChars!(16,char,LetterCase.lower)(i);
> to convert an integer to Hex for example, but the compiler
> wasn't happy with it. How would I convert an int to a string
> using this?
I haven't tested it, but:
`toChars` doesn't return a string -- that's the whole point :)
It returns a range, so you have to call it something like:
auto v = toChars!(16,char,LetterCase.lower)(i);
More information about the Digitalmars-d-learn