how can I empty associative arrays of form

char[][char[]] a;

because
a.length=0
is not allowed
and
a=new char[][char[]]
is also not allowed :)

Thank you,
Razvan

razvanaciu@rdstm.ro wrote:

> how can I empty associative arrays of form
> 
> char[][char[]] a;
> 
> because
> a.length=0
> is not allowed
> and
> a=new char[][char[]]
> is also not allowed :)
> 
> Thank you,
> Razvan

This is implementation-dependent, but

 a = null;

works. If you want to preserve the size of the hashtable, do something like

 void*[] b = cast(void*[])a;
 b[] = null;

-Ben

It would be cool if there were an automatic way to do it, but I don't know of any.  However, this code should work:

foreach(char[] key; a.keys)
  delete a[key];  // removes it from the hash, doesn't delete the thing



razvanaciu@rdstm.ro wrote:
> how can I empty associative arrays of form
> 
> char[][char[]] a;
> 
> because
> a.length=0 is not allowed
> and
> a=new char[][char[]]
> is also not allowed :)
> 
> Thank you,
> Razvan

Russ Lewis schrieb:
> It would be cool if there were an automatic way to do it, but I don't know of any. 

How about something like "b = b.init"?

> However, this code should work:
> 
> foreach(char[] key; a.keys)
>   delete a[key];  // removes it from the hash, doesn't delete the thing

Bleah, i don't like it.

-eye

On Fri, 18 Jun 2004 22:04:45 +0200, Ilya Minkov <minkov@cs.tum.edu> wrote:

> Russ Lewis schrieb:
>> It would be cool if there were an automatic way to do it, but I don't know of any.
>
> How about something like "b = b.init"?

This seems to work, however does it free the hash table? (length == 0 after this call)

>> However, this code should work:
>>
>> foreach(char[] key; a.keys)
>>   delete a[key];  // removes it from the hash, doesn't delete the thing
>
> Bleah, i don't like it.

Neither, it seems in-efficient.

Regan

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