Re: Set global immutables from main/getopt?

2014-01-29 Thread Stanislav Blinov 

On Wednesday, 29 January 2014 at 00:28:29 UTC, Meta wrote:

You can also use the Github Gist feature for displaying code, 
can't you?


But you'd need a github account for that, won't you? :)

Re: Set global immutables from main/getopt?

2014-01-29 Thread Dicebot 
One can always turn global into pointer to immutable - it will 
preserve most benefits but can be always replaced with 
differently initialized one.

Set global immutables from main/getopt?

2014-01-28 Thread Andrew Klaassen 
I thought it'd be a good idea to set global immutables from args 
passed to main().  When I do this:



import io = std.stdio;

immutable string abc;

void foo() {
  io.writeln(abc);
}

void main(string[] args) {
  abc = args[1];
  foo();
}


...I get the compiler error: Error: can only initialize const 
member abc inside constructor.  When I do this:



import io = std.stdio;

void foo() {
  io.writeln(abc);
}

void main(string[] args) {
  immutable string abc = args[1];
  foo();
}


...I get the compiler error: Error: undefined identifier abc.

Is there any workaround, or am I attempting a 
stupidity/impossibility?


Thanks.

Andrew

Re: Set global immutables from main/getopt?

2014-01-28 Thread Stanislav Blinov 
On Tuesday, 28 January 2014 at 17:11:43 UTC, Andrew Klaassen 
wrote:


Naturally, initialize them in constructor :)

http://dpaste.dzfl.pl/620e8c61

Re: Set global immutables from main/getopt?

2014-01-28 Thread Steven Schveighoffer 
On Tue, 28 Jan 2014 12:27:02 -0500, Stanislav Blinov  
stanislav.bli...@gmail.com wrote:



On Tuesday, 28 January 2014 at 17:11:43 UTC, Andrew Klaassen wrote:

Naturally, initialize them in constructor :)

http://dpaste.dzfl.pl/620e8c61


That being said, it *could* be done, since the runtime has access to the  
command line args. But the runtime would have to provide access to those  
parameters. But you'd have to do it in a static constructor.


-Steve

Re: Set global immutables from main/getopt?

2014-01-28 Thread Stanislav Blinov 
On Tuesday, 28 January 2014 at 18:30:37 UTC, Steven Schveighoffer 
wrote:
On Tue, 28 Jan 2014 12:27:02 -0500, Stanislav Blinov 
stanislav.bli...@gmail.com wrote:


http://dpaste.dzfl.pl/620e8c61


That being said, it *could* be done, since the runtime has 
access to the command line args. But the runtime would have to 
provide access to those parameters. But you'd have to do it in 
a static constructor.




Ahem. There was a link to dpaste :D

Re: Set global immutables from main/getopt?

2014-01-28 Thread Steven Schveighoffer 
On Tue, 28 Jan 2014 13:41:24 -0500, Stanislav Blinov  
stanislav.bli...@gmail.com wrote:



On Tuesday, 28 January 2014 at 18:30:37 UTC, Steven Schveighoffer wrote:
On Tue, 28 Jan 2014 12:27:02 -0500, Stanislav Blinov  
stanislav.bli...@gmail.com wrote:


http://dpaste.dzfl.pl/620e8c61


That being said, it *could* be done, since the runtime has access to  
the command line args. But the runtime would have to provide access to  
those parameters. But you'd have to do it in a static constructor.




Ahem. There was a link to dpaste :D


Oops! I glossed over that :) I thought the example just showed how a  
static constructor was required to initialize, I didn't see the access to  
the program args.


-Steve

Re: Set global immutables from main/getopt?

2014-01-28 Thread Meta 
On Tuesday, 28 January 2014 at 19:02:41 UTC, Stanislav Blinov 
wrote:

On Tuesday, 28 January 2014 at 18:56:35 UTC, Ali Çehreli wrote:

On a side note, dpaste is not associated with newsgroups. It 
can disappear at any time in the future. I like seeing and 
showing code in message bodies both for convenience and future 
availability. :)


Awww, but it is so much more convenient. No spurious 
linebreaks, nice syntax highlighting, built-in compiler... :P


But I agree, sometimes it's a real pain when you've searching 
for something and all you find is dead links.


You can also use the Github Gist feature for displaying code, 
can't you?