• Charlie (9/9) Jun 04 2005 Why does this not work ?
• Vathix (4/12) Jun 04 2005 It won't recalculate the hashes or anything. You would have to remove th...
• Ben Hinkle (5/23) Jun 04 2005 not only that but map.keys returns a dynamic array of the keys. So the
• Derek Parnell (18/32) Jun 04 2005 Try this sort of things instead ...

"Charlie" <charles jwavro.com> writes:

Why does this not work ?

 void array_change_key_case( inout char [] [ char [] ] map)
 {

    foreach ( inout char [] key;map.keys )
   {

      key = std.string.tolower(key);

    }


 }


Charlie

Vathix <vathix dprogramming.com> writes:

On Sat, 04 Jun 2005 17:27:22 -0400, Charlie <charles jwavro.com> wrote:

 Why does this not work ?

  void array_change_key_case( inout char [] [ char [] ] map)
  {

     foreach ( inout char [] key;map.keys )
    {

       key = std.string.tolower(key);

     }


  }

It won't recalculate the hashes or anything. You would have to remove the  
element and add it again with the new key, which can't be done while  
you're in the foreach loop.

"Ben Hinkle" <ben.hinkle gmail.com> writes:

"Vathix" <vathix dprogramming.com> wrote in message 
news:op.sru8qlhskcck4r esi...
 On Sat, 04 Jun 2005 17:27:22 -0400, Charlie <charles jwavro.com> wrote:

 Why does this not work ?

  void array_change_key_case( inout char [] [ char [] ] map)
  {

     foreach ( inout char [] key;map.keys )
    {

       key = std.string.tolower(key);

     }


  }

 It won't recalculate the hashes or anything. You would have to remove the 
 element and add it again with the new key, which can't be done while 
 you're in the foreach loop.

not only that but map.keys returns a dynamic array of the keys. So the 
foreach code only changes the values inside the dynamic array and doesn't 
touch the map. 

Derek Parnell <derek psych.ward> writes:

On Sat, 4 Jun 2005 16:27:22 -0500, Charlie wrote:

 Why does this not work ?
 
  void array_change_key_case( inout char [] [ char [] ] map)
  {
 
     foreach ( inout char [] key;map.keys )
    {
 
       key = std.string.tolower(key);
 
     }
 
 
  }

Try this sort of things instead ...

 void array_change_key_case( inout char [] [ char [] ] map)
  foreach(char[] key; map.keys)
  {
    char[] newkey;
    newkey = tolower(key);
    if (newkey != key)
    {
        map[newkey] = map[key];
        delete map[key];
    }   
  }
 }

-- 
Derek Parnell
Melbourne, Australia
5/06/2005 9:44:35 AM