• yvad (5/5) Mar 31 2008 if there is any way to use named enum as source of foreach?
• Henning Hasemann (12/21) Apr 01 2008 You can do:
• yvad (2/30) Apr 01 2008 This the main reason for foreach.

yvad <yannurov gmail.com> writes:

if there is any way to use named enum as source of foreach?
For example like

enum X {A, B, C}

foreach(x; X) ...

I have enum that can be extened in future. But I dont want to refactor sources
every time I I extend enum

Henning Hasemann <hhasemann web.de> writes:

yvad <yannurov gmail.com> wrote:
 if there is any way to use named enum as source of foreach?
 For example like
 
 enum X {A, B, C}
 
 foreach(x; X) ...
 
 I have enum that can be extened in future. But I dont want to
 refactor sources every time I I extend enum

You can do:
for(auto x = X.min; x <= X.max; x++) { ... }

But note however that this will execute your body once for each numeric
value between the lowest and the highest in your enum, not for each
defined member. ie if you do:

enum X {A=50, B=50, C=100};

The loop will be run for 50, 51, 52, ..., 99, 100.

Henning

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GPG Public Key:
http://gpg-keyserver.de/pks/lookup?op=get&search=0xDDD6D36D41911851

yvad <yannurov gmail.com> writes:

Henning Hasemann Wrote:

 yvad <yannurov gmail.com> wrote:
 if there is any way to use named enum as source of foreach?
 For example like
 
 enum X {A, B, C}
 
 foreach(x; X) ...
 
 I have enum that can be extened in future. But I dont want to
 refactor sources every time I I extend enum

 
 You can do:
 for(auto x = X.min; x <= X.max; x++) { ... }
 
 But note however that this will execute your body once for each numeric
 value between the lowest and the highest in your enum, not for each
 defined member. ie if you do:
 
 enum X {A=50, B=50, C=100};
 
 The loop will be run for 50, 51, 52, ..., 99, 100.
 
 Henning
 
 -- 
 GPG Public Key:
 http://gpg-keyserver.de/pks/lookup?op=get&search=0xDDD6D36D41911851
 

This the main reason for foreach.