Re: @nogc formattedWrite
On Saturday, 7 October 2017 at 18:14:00 UTC, Nordlöw wrote: Is it currently possible to somehow do @nogc formatted output to string? I'm currently using my `pure @nogc nothrow` array-container `CopyableArray` as @safe pure /*TODO nothrow @nogc*/ unittest { import std.format : formattedWrite; const x = "42"; alias A = CopyableArray!(char); A a; a.formattedWrite!("x : %s")(x); assert(a == "x : 42"); } but I can't tag the unittest as `nothrow @nogc` because of the call to `formattedWrite`. Is this because `formattedWrite` internally uses the GC for buffer allocations or because it may throw? It would be nice to be able to formatted output in -betterC... Phobos code is not @nogc (can be fixed), but it will not nothrow. PRs with @nogc formatting functionality are welcome in Mir Algorithm. Cheers, Ilya
Re: @nogc formattedWrite
On Saturday, 7 October 2017 at 18:27:36 UTC, jmh530 wrote: On Saturday, 7 October 2017 at 18:14:00 UTC, Nordlöw wrote: It would be nice to be able to formatted output in -betterC... Agreed. If you know the size of the buffer, you can use sformat, which might be @nogc, but I don't know if it's compatible with betterC. Also, you might check out Ocean, which might have nogc formatting. https://github.com/sociomantic-tsunami/ocean As far as I know sformat is still not @nogc because it may throw an exception if buffer is not large enough, and throwing exceptions requires allocation.
Re: @nogc formattedWrite
On Saturday, 7 October 2017 at 18:14:00 UTC, Nordlöw wrote: It would be nice to be able to formatted output in -betterC... Agreed. If you know the size of the buffer, you can use sformat, which might be @nogc, but I don't know if it's compatible with betterC. Also, you might check out Ocean, which might have nogc formatting. https://github.com/sociomantic-tsunami/ocean
@nogc formattedWrite
Is it currently possible to somehow do @nogc formatted output to string? I'm currently using my `pure @nogc nothrow` array-container `CopyableArray` as @safe pure /*TODO nothrow @nogc*/ unittest { import std.format : formattedWrite; const x = "42"; alias A = CopyableArray!(char); A a; a.formattedWrite!("x : %s")(x); assert(a == "x : 42"); } but I can't tag the unittest as `nothrow @nogc` because of the call to `formattedWrite`. Is this because `formattedWrite` internally uses the GC for buffer allocations or because it may throw? It would be nice to be able to formatted output in -betterC...