On Tuesday, 30 January 2018 at 18:42:45 UTC, Steven Schveighoffer
wrote:
On 1/30/18 12:53 PM, cc wrote:
import std.container;
import std.format;
Array!char str;
str.length = 256;
str.sformat!"%s:%s"("some", "string");
// Error: template std.format.sformat cannot deduce
function from argument types !("%s:%s")(Array!char, string,
string), candidates are:
// std.format.sformat(alias fmt, Args...)(char[] buf,
Args args) if (isSomeString!(typeof(fmt)))
// std.format.sformat(Char, Args...)(char[] buf, in
Char[] fmt, Args args)
sformat requires a builtin array, apparently. It doesn't work
for other types.
For everything else, you can use formattedWrite:
```
import std.array : appender;
auto writer = appender!string();
writer.formattedWrite!"%s is the ultimate %s."(42, "answer");
writeln(writer.data);
```
without any GC:
```
/+dub.sdl:
dependency "emsi_containers" version="~>0.6.0"
+/
import std.format, std.stdio;
void main()
{
import containers;
DynamicArray!char arr;
arr.formattedWrite!"%s is the ultimate %s."(42, "answer");
printf("%.*s\n", arr.length, arr.ptr);
}
```
https://run.dlang.io/is/Taem9j
