• Steven Schveighoffer (9/9) Nov 26 2019 Did you know this was valid syntax? I didn't.
• Adam D. Ruppe (5/6) Nov 26 2019 I did not know already, but it is no surprise to me either
• Steven Schveighoffer (8/14) Nov 26 2019 static if and version are not attributes. But actually, I didn't know
• Timon Gehr (4/21) Nov 26 2019 static foreach(i;0..10):
• H. S. Teoh (7/11) Nov 28 2019 Ouch. That's ... ouch.

Steven Schveighoffer <schveiguy gmail.com> writes:

Did you know this was valid syntax? I didn't.

static if(cond)
    ...
else: // wat...


seen here:
https://github.com/dlang/phobos/blob/3bfccf4f160a07165682549407eaeec5c8907c82/std/utf.d#L4213-L4215

Only seems to work outside of functions, and naturally then not for 
normal if statements.

-Steve

Adam D. Ruppe <destructionator gmail.com> writes:

On Tuesday, 26 November 2019 at 15:28:38 UTC, Steven 
Schveighoffer wrote:
 Did you know this was valid syntax? I didn't.

I did not know already, but it is no surprise to me either 
because the colon works on almost every other attribute like that 
too... static if and version are similar according to teh grammar.

Steven Schveighoffer <schveiguy gmail.com> writes:

On 11/26/19 10:35 AM, Adam D. Ruppe wrote:
 On Tuesday, 26 November 2019 at 15:28:38 UTC, Steven Schveighoffer wrote:
 Did you know this was valid syntax? I didn't.

 
 I did not know already, but it is no surprise to me either because the 
 colon works on almost every other attribute like that too... static if 
 and version are similar according to teh grammar.

static if and version are not attributes. But actually, I didn't know 
that it works with version as well. Seems to also work with a debug 
condition according to grammar.

What's weird is that it doesn't work in a function, but I guess those 
are considered a different part of the grammar.  In any case, I probably 
will not be using it. But I did a double take when I saw it...

-Steve

Timon Gehr <timon.gehr gmx.ch> writes:

On 26.11.19 16:50, Steven Schveighoffer wrote:
 On 11/26/19 10:35 AM, Adam D. Ruppe wrote:
 On Tuesday, 26 November 2019 at 15:28:38 UTC, Steven Schveighoffer wrote:
 Did you know this was valid syntax? I didn't.

 I did not know already, but it is no surprise to me either because the 
 colon works on almost every other attribute like that too... static if 
 and version are similar according to teh grammar.

 
 static if and version are not attributes. But actually, I didn't know 
 that it works with version as well. Seems to also work with a debug 
 condition according to grammar.
 
 What's weird is that it doesn't work in a function, but I guess those 
 are considered a different part of the grammar.  In any case, I probably 
 will not be using it. But I did a double take when I saw it...
 
 -Steve

static foreach(i;0..10):

pragma(msg, ":P");
pragma(msg, "!");

"H. S. Teoh" <hsteoh quickfur.ath.cx> writes:

On Tue, Nov 26, 2019 at 05:02:26PM +0100, Timon Gehr via Digitalmars-d wrote:
[...]
 static foreach(i;0..10):
 
 pragma(msg, ":P");
 pragma(msg, "!");

Ouch. That's ... ouch.

Chalking this down to one of the darker corners of D. :-/


T

-- 
Being forced to write comments actually improves code, because it is easier to
fix a crock than to explain it. -- G. Steele