• Johan Engelen (17/17) Jan 18 2016 Is it possible to do conditional compilation inside an array
• Adam D. Ruppe (9/11) Jan 18 2016 No, but you might break it up:
• =?UTF-8?Q?Ali_=c3=87ehreli?= (20/30) Jan 18 2016 I was writing something similar:

Johan Engelen <j j.nl> writes:

Is it possible to do conditional compilation inside an array 
initializer? Something like this:
int[] inttable =
[
     1,
     4,
version(smth)  {  // <--- does not compile
     5,
     6,
}
     8,
   1345
];

(real world case: 
https://github.com/ldc-developers/ldc/blob/merge-2.069/ddmd/idgen.d#L279)

If it is not possible, what alternative solution would you use?

Thanks!

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

On Tuesday, 19 January 2016 at 00:33:21 UTC, Johan Engelen wrote:
 Is it possible to do conditional compilation inside an array 
 initializer?

No, but you might break it up:

enum inttable_1 = [1,4];
version(smth)
     enum inttable_middle = [5,6];
else
     enum inttable_middle = [];
enum inttable_2 = [8, 1345];

int[] inttable = inttable_1 ~ inttable_middle ~ inttable_2;

=?UTF-8?Q?Ali_=c3=87ehreli?= <acehreli yahoo.com> writes:

On 01/18/2016 04:38 PM, Adam D. Ruppe wrote:
 On Tuesday, 19 January 2016 at 00:33:21 UTC, Johan Engelen wrote:
 Is it possible to do conditional compilation inside an array initializer?

 No, but you might break it up:

 enum inttable_1 = [1,4];
 version(smth)
      enum inttable_middle = [5,6];
 else
      enum inttable_middle = [];
 enum inttable_2 = [8, 1345];

 int[] inttable = inttable_1 ~ inttable_middle ~ inttable_2;

I was writing something similar:

int[] table;

// Alternatively, consider 'shared static this()'
static this() {
     const tens  = [ 10, 20 ];
     const hundreds = [ 100, 200 ];
     const thousands = [ 1000, 2000 ];

     table ~= tens;

     version (smth) {
     table ~= hundreds;
     }

     table ~= thousands;
}

version = smth;

void main() {

     import std.stdio;
     writeln(table);
}

Ali