• Andrej Mitrovic (16/16) Aug 04 2010 From TDPL, page 161:
• Jonathan M Davis (6/26) Aug 04 2010 std.stdio - which is what you usually import for doing I/O. Of course, i...
• Andrej Mitrovic (25/53) Aug 04 2010 Okay, this works:

Andrej Mitrovic <andrej.mitrovich gmail.com> writes:

From TDPL, page 161:

import std.conv;

void writeln(T...)(T args)
{
    foreach (arg; args)
    {
        stdout.rawWrite(to!string(arg));
    }
    stdout.rawWrite('\n');
    stdout.flush();
}

void main()
{
    writeln("test");
}

test.d(10): Error: undefined identifier stdout

Jonathan M Davis <jmdavisprog gmail.com> writes:

On Wednesday, August 04, 2010 11:38:28 Andrej Mitrovic wrote:
 From TDPL, page 161:
 
 import std.conv;
 
 void writeln(T...)(T args)
 {
     foreach (arg; args)
     {
         stdout.rawWrite(to!string(arg));
     }
     stdout.rawWrite('\n');
     stdout.flush();
 }
 
 void main()
 {
     writeln("test");
 }
 
 test.d(10): Error: undefined identifier stdout

std.stdio - which is what you usually import for doing I/O. Of course, it 
actually defines writeln(), so it's not like you need to write it yourself -
not 
to mention, you can always just look at stdio.d in the phobos src (which gets 
downloaded with dmd) to see its exact implementation if you want to.

- Jonathan M Davis

Andrej Mitrovic <andrej.mitrovich gmail.com> writes:

Okay, this works:

import std.conv, std.stdio;

void writeln(T...)(T args)
{
    foreach (arg; args)
    {
        stdout.rawWrite(to!string(arg));
    }
    stdout.rawWrite("\n");
    stdout.flush();
}

void main()
{
    writeln("test");
}

But I had to replace '\n' with "\n", otherwise I get some errors back:

test.d(11): Error: template std.stdio.File.rawWrite(T) does not match any
function template declaration
test.d(11): Error: template std.stdio.File.rawWrite(T) cannot deduce
template function from argument types !()(char)
test.d(17): Error: template instance test.writeln!(string) error
instantiating

Which probably makes sense if rawWrite expects a string and not a char.

Thanks Jonathan.

On Wed, Aug 4, 2010 at 8:52 PM, Jonathan M Davis <jmdavisprog gmail.com>wrote:

 On Wednesday, August 04, 2010 11:38:28 Andrej Mitrovic wrote:
 From TDPL, page 161:

 import std.conv;

 void writeln(T...)(T args)
 {
     foreach (arg; args)
     {
         stdout.rawWrite(to!string(arg));
     }
     stdout.rawWrite('\n');
     stdout.flush();
 }

 void main()
 {
     writeln("test");
 }

 test.d(10): Error: undefined identifier stdout

 std.stdio - which is what you usually import for doing I/O. Of course, it
 actually defines writeln(), so it's not like you need to write it yourself
 - not
 to mention, you can always just look at stdio.d in the phobos src (which
 gets
 downloaded with dmd) to see its exact implementation if you want to.

 - Jonathan M Davis