Hi,

I have a simple question, how can I remove all elements of an associative array
in an elegant way?
The length property of an AA is read only.
Doing a foreach/remove seems a bit to much text; most containers provide some clear method.

Mandel wrote:
> Hi,
> 
> I have a simple question, how can I remove all elements of an associative array
> in an elegant way?
> The length property of an AA is read only.
> Doing a foreach/remove seems a bit to much text; most containers provide some clear method.


import std.stdio;

void main() {

  bool[char[]] aa;
  aa["abc"] = true;
  aa["def"] = false;
  writefln(aa);

  aa = aa.init;
  writefln(aa);
}

Bradley Smith wrote:
> Mandel wrote:
>> Hi,
>>
>> I have a simple question, how can I remove all elements of an
>> associative array
>> in an elegant way?
>> The length property of an AA is read only.
>> Doing a foreach/remove seems a bit to much text; most containers
>> provide some clear method.
> 
> 
> import std.stdio;
> 
> void main() {
> 
>   bool[char[]] aa;
>   aa["abc"] = true;
>   aa["def"] = false;
>   writefln(aa);
> 
>   aa = aa.init;
>   writefln(aa);
> }

... that's so simple; why didn't I think of that before?!

Thanks for that! :)

	-- Daniel

-- 
int getRandomNumber()
{
    return 4; // chosen by fair dice roll.
              // guaranteed to be random.
}

http://xkcd.com/

v2sw5+8Yhw5ln4+5pr6OFPma8u6+7Lw4Tm6+7l6+7D i28a2Xs3MSr2e4/6+7t4TNSMb6HTOp5en5g6RAHCP  http://hackerkey.com/

Bradley Smith napisał(a):
> Mandel wrote:
>> Hi,
>>
>> I have a simple question, how can I remove all elements of an associative array
>> in an elegant way?
>> The length property of an AA is read only.
>> Doing a foreach/remove seems a bit to much text; most containers provide some clear method.
> 
> 
> import std.stdio;
> 
> void main() {
> 
>   bool[char[]] aa;
>   aa["abc"] = true;
>   aa["def"] = false;
>   writefln(aa);
> 
>   aa = aa.init;
>   writefln(aa);
> }
> 


You can also do it in following way:

aa = null;

BR
Marcin Kuszczak
aarti_pl

On Wed, 18 Apr 2007 18:01:00 +1000, Daniel Keep <daniel.keep.lists@gmail.com> wrote:

>
>
>Bradley Smith wrote:
>> Mandel wrote:
>>> Hi,
>>>
>>> I have a simple question, how can I remove all elements of an
>>> associative array
>>> in an elegant way?
>>> The length property of an AA is read only.
>>> Doing a foreach/remove seems a bit to much text; most containers
>>> provide some clear method.
>> 
>> 
>> import std.stdio;
>> 
>> void main() {
>> 
>>   bool[char[]] aa;
>>   aa["abc"] = true;
>>   aa["def"] = false;
>>   writefln(aa);
>> 
>>   aa = aa.init;
>>   writefln(aa);
>> }
>
>... that's so simple; why didn't I think of that before?!
>
>Thanks for that! :)
>
>	-- Daniel

Or aa = null (aa.init == null)

Max Samukha wrote:
> Daniel Keep wrote:
> 
>>Bradley Smith wrote:
>>
>>>import std.stdio;
>>>
>>>void main() {
>>>
>>>  bool[char[]] aa;
>>>  aa["abc"] = true;
>>>  aa["def"] = false;
>>>  writefln(aa);
>>>
>>>  aa = aa.init;
>>>  writefln(aa);
>>>}
>>
>>... that's so simple; why didn't I think of that before?!
>>
>>Thanks for that! :)
>>
>>	-- Daniel
> 
> 
> Or aa = null (aa.init == null)

can you then fill it up again?

On Wed, 18 Apr 2007 09:18:50 -0700, BCS <BCS@pathlink.com> wrote:

>Max Samukha wrote:
>> Daniel Keep wrote:
>> 
>>>Bradley Smith wrote:
>>>
>>>>import std.stdio;
>>>>
>>>>void main() {
>>>>
>>>>  bool[char[]] aa;
>>>>  aa["abc"] = true;
>>>>  aa["def"] = false;
>>>>  writefln(aa);
>>>>
>>>>  aa = aa.init;
>>>>  writefln(aa);
>>>>}
>>>
>>>... that's so simple; why didn't I think of that before?!
>>>
>>>Thanks for that! :)
>>>
>>>	-- Daniel
>> 
>> 
>> Or aa = null (aa.init == null)
>
>can you then fill it up again?
Yes