digitalmars.D - Re: Preliminary submission - std.rational and std.typelist
- "H. S. Teoh" <hsteoh quickfur.ath.cx> Oct 08 2012
On Sun, Oct 07, 2012 at 01:15:50PM +0400, Dmitry Olshansky wrote: [...]Just define method with this signature: void toString(scope void delegate(const(char)[]) sink) And bingo! It's used in all of formatting stuff like write(f)(ln), format, formattedWrite etc. e.g. before posting I played with this: import std.stdio, std.format; struct A{ int k; void toString(scope void delegate(const(char)[]) sink) { formattedWrite(sink, "[%d]", k); } } void main(){ A a = A(90); writeln(a); }
+1. This is much more powerful and useful, not to mention more efficient in many cases (by avoiding the need to create multiple string buffers), than the current toString(). I like this. T -- We are in class, we are supposed to be learning, we have a teacher... Is it too much that I expect him to teach me??? -- RL
Oct 08 2012