A very basic blog about D

[Andrei Alexandrescu]

On 7/7/13 10:08 AM, John Colvin wrote:
> On Sunday, 7 July 2013 at 16:06:43 UTC, Andrei Alexandrescu wrote:
>> On 7/7/13 8:55 AM, Andrei Alexandrescu wrote:
>>> Here's a conformant implementation for reference:
>>> http://www.scs.stanford.edu/histar/src/pkg/echo/echo.c
>>
>> Hmm, that's actually not so good, it doesn't ensure that I/O was
>> successful. Anyhow, here's a possibility:
>>
>> import std.stdout;
>> void main(string[] args)
>> {
>> const appendNewline = args.length > 1 && args[1] == "-n";
>> foreach (i, arg; args[appendNewline + 1 .. $])
>> {
>> if (i) write(' ');
>> write(arg);
>> }
>> if (nl) writeln();
>> }
>
> Right structure, wrong logic? Shouldn't it be:
>
> import std.stdio;
> void main(string[] args)
> {
> const noNewline = args.length > 1 && args[1] == "-n";
> foreach (i, arg; args[noNewline + 1 .. $])
> {
> if (i) write(' ');
> write(arg);
> }
> if (!noNewline) writeln();
> }
>
> or am I being dumb?

No, I am :o).

> Yeah, I reckon it will get quite interesting as I get in to the details.
> It's easy to see these basic utilities as trivial but they most
> certainly aren't, if you want to get them 100% right for all the options.

Cool!


Andrei