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.
auto rng = cast(char[]) str[];
// Error: cannot cast expression `str.opSlice()` of type
`RangeT!(Array!char)` to `char[]`
why not just auto rng = str[]?
Additionally, would sformat cause GC allocations even when writing to a
preallocated buffer?
Not directly. If sformat needs to call a function on what you are asking
to format that would use the GC, then it would not be @nogc.
-Steve
