problem with gc?

[Kagamin via Digitalmars-d-learn]

On Wednesday, 27 May 2015 at 05:48:13 UTC, zhmt wrote:
> I am writing a echoclient, as below:
>
> Ptr!Conn conn = connect("127.0.0.1",8881);
> ubyte[100] buf;
> for(int i=0; i<N; i++)
> {
> 	scope string str = format("%s",i);
> 	conn.write((cast(ubyte*)str.ptr)[0..str.length]);
> 	conn.read(buf[0..str.length]);
> 	n++;
> }
> conn.close();

You can use sformat 
http://dlang.org/phobos/std_format.html#.sformat with your buffer.