[D Cookbook]about "Communicating with external processes" part.

[xky via Digitalmars-d-learn]

On Sunday, 13 September 2015 at 13:34:18 UTC, Adam D. Ruppe wrote:
> I'm in a super rush, running late to something else, but try 
> using readln in the child before writing and see what happens. 
> You sent data to it but the child never read it.

oh my... you're right. lol
so, i fix "pipe.d" this:



[ pipe.d ]
============================================================
import std.process;
import std.stdio;

void main(){
	auto info = pipeProcess("child.exe");
	scope(exit) wait(info.pid);
	//info.stdin.writeln("data to send to the process");
	foreach(line; info.stdout.byLine){
		writeln("Result:", line);
	}
}
============================================================



[ CMD ]
============================================================
C:\Users\user\Desktop\pipe>pipe
Result:hello
============================================================



work fine. thx so much. :)