On Thu, 30 May 2013 12:13:19 +0100, Shriramana Sharma <samj...@gmail.com>
wrote:
Hello. I am new to D and come from some intermediate C/C++ plus some
Python programming background. I currently have DMD 2.062 installed on
my Kubuntu Raring 64-bit system.
1. Too big binary output?
OK so I wrote my first Hello World program:
#! /usr/bin/rdmd
import std.stdio ;
void main() {
writeln ( "Namaste Prapancha!" ) ;
}
(so I'm a bit of a Sanskrit geek...) and when I save it as namaste.d,
do chmod +x and run ./namaste.d, all is fine and I get the output.
However I am somewhat taken aback to see the file size -- 335KiB for a
simple Hello World? The equivalent C/C++ programs compiled with Clang
without any -O options produce binaries of less than 10K!
The D standard library is currently statically linked. This will change
shortly/eventually.
2. No filename freedom?
Next I wanted to go to another example but I like to keep my practice
files in order, so I rename namaste.d to 01-namaste.d but I get the
error:
$ dmd 01-namaste.d
01-namaste.d: Error: module 01-namaste has non-identifier characters
in filename, use module declaration instead
Huh? Now my program *name* has to be a valid identifier in the
language? So I can't have my filename contain a hyphen-minus or start
with a digit, and only something like e01_namaste.d is permitted. Why
is this?
As the error says "use module declaration instead". You need to add a
"module namaste;" statement to the top of the file 01-namaste.d. D
defaults the module name to the filename, but you can specify it when they
differ.
R
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