Is D supposed to be able to handle nested associative arrays ?


-- 
/Jacob Carlborg

Should be. Are you having problems?

(I don't use them much, but fwiw, it seems like tango had some [trivial?] problems with them)

On 11/12/2010 10:08 AM, Jacob Carlborg wrote:
> Is D supposed to be able to handle nested associative arrays ?
>
>

On 2010-11-12 17:44, Ellery Newcomer wrote:
> Should be. Are you having problems?
>
> (I don't use them much, but fwiw, it seems like tango had some
> [trivial?] problems with them)
>
> On 11/12/2010 10:08 AM, Jacob Carlborg wrote:
>> Is D supposed to be able to handle nested associative arrays ?
>>
>>

Well, yes. The following code:

module main;

void main ()
{
    auto tree = ["" : ["" : ""]];
}

Using DMD 1.065 results in:

Assertion failed: (0), function toExpression, file init.c, line 437.

-- 
/Jacob Carlborg

Jacob Carlborg:

> module main;
> 
> void main ()
> {
>      auto tree = ["" : ["" : ""]];
> }
> 
> Using DMD 1.065 results in:
> 
> Assertion failed: (0), function toExpression, file init.c, line 437.

Please put it in Bugzilla if not already present :-)

Bye,
bearophile

On 13/11/2010 11:02, Jacob Carlborg wrote:
> On 2010-11-12 17:44, Ellery Newcomer wrote:
>> Should be. Are you having problems?
>>
>> (I don't use them much, but fwiw, it seems like tango had some
>> [trivial?] problems with them)
>>
>> On 11/12/2010 10:08 AM, Jacob Carlborg wrote:
>>> Is D supposed to be able to handle nested associative arrays ?
>>>
>>>
>
> Well, yes. The following code:
>
> module main;
>
> void main ()
> {
> auto tree = ["" : ["" : ""]];
> }
>
> Using DMD 1.065 results in:
>
> Assertion failed: (0), function toExpression, file init.c, line 437.
>
That's static initialisation not an AA.

	alias string[char]	innerAA;
	alias innerAA[int]	outerAA;

	outerAA	x;
	innerAA	t;
	
	x[2] = t;
	
	auto y = x[2];
	y['c'] = "cat";

I've no idea what'll happen if you start passing it around though.

-- 
My enormous talent is exceeded only by my outrageous laziness.
http://www.ssTk.co.uk

On 2010-11-13 14:56, div0 wrote:
> On 13/11/2010 11:02, Jacob Carlborg wrote:
>> On 2010-11-12 17:44, Ellery Newcomer wrote:
>>> Should be. Are you having problems?
>>>
>>> (I don't use them much, but fwiw, it seems like tango had some
>>> [trivial?] problems with them)
>>>
>>> On 11/12/2010 10:08 AM, Jacob Carlborg wrote:
>>>> Is D supposed to be able to handle nested associative arrays ?
>>>>
>>>>
>>
>> Well, yes. The following code:
>>
>> module main;
>>
>> void main ()
>> {
>> auto tree = ["" : ["" : ""]];
>> }
>>
>> Using DMD 1.065 results in:
>>
>> Assertion failed: (0), function toExpression, file init.c, line 437.
>>
> That's static initialisation not an AA.
>
> alias string[char] innerAA;
> alias innerAA[int] outerAA;
>
> outerAA x;
> innerAA t;
>
> x[2] = t;
>
> auto y = x[2];
> y['c'] = "cat";
>
> I've no idea what'll happen if you start passing it around though.

How about "associative array literal" then? Regardless of what you call it I shouldn't get an assertion failure.

-- 
/Jacob Carlborg

On 2010-11-13 14:39, bearophile wrote:
> Jacob Carlborg:
>
>> module main;
>>
>> void main ()
>> {
>>       auto tree = ["" : ["" : ""]];
>> }
>>
>> Using DMD 1.065 results in:
>>
>> Assertion failed: (0), function toExpression, file init.c, line 437.
>
> Please put it in Bugzilla if not already present :-)
>
> Bye,
> bearophile

Done: http://d.puremagic.com/issues/show_bug.cgi?id=5211

-- 
/Jacob Carlborg

Wow.

Yeah, I guess all bets are off when it comes to initializations.

In the meantime, I guess you'll have to use

string[string][string] tree;
tree = ["" : ["" : ""]];

On 11/13/2010 05:02 AM, Jacob Carlborg wrote:
> Well, yes. The following code:
>
> module main;
>
> void main ()
> {
> auto tree = ["" : ["" : ""]];
> }
>
> Using DMD 1.065 results in:
>
> Assertion failed: (0), function toExpression, file init.c, line 437.
>

On 13/11/2010 15:49, Jacob Carlborg wrote:
> On 2010-11-13 14:56, div0 wrote:
>> On 13/11/2010 11:02, Jacob Carlborg wrote:
>>> On 2010-11-12 17:44, Ellery Newcomer wrote:
>>>> Should be. Are you having problems?
>>>>
>>>> (I don't use them much, but fwiw, it seems like tango had some
>>>> [trivial?] problems with them)
>>>>
>>>> On 11/12/2010 10:08 AM, Jacob Carlborg wrote:
>>>>> Is D supposed to be able to handle nested associative arrays ?
>>>>>
>>>>>
>>>
>>> Well, yes. The following code:
>>>
>>> module main;
>>>
>>> void main ()
>>> {
>>> auto tree = ["" : ["" : ""]];
>>> }
>>>
>>> Using DMD 1.065 results in:
>>>
>>> Assertion failed: (0), function toExpression, file init.c, line 437.
>>>
>> That's static initialisation not an AA.
>>
>> alias string[char] innerAA;
>> alias innerAA[int] outerAA;
>>
>> outerAA x;
>> innerAA t;
>>
>> x[2] = t;
>>
>> auto y = x[2];
>> y['c'] = "cat";
>>
>> I've no idea what'll happen if you start passing it around though.
>
> How about "associative array literal" then? Regardless of what you call
> it I shouldn't get an assertion failure.
>

True. It's been fixed in dmd2 though, you get:

Error: Integer constant expression expected instead of ""

When it's auto the compiler thinks you are doing static initialisation of a flat array, not an AA. You have to do what Ellery said.

-- 
My enormous talent is exceeded only by my outrageous laziness.
http://www.ssTk.co.uk

On Sat, 13 Nov 2010 17:27:08 +0000
div0 <div0@sourceforge.net> wrote:

> > How about "associative array literal" then? Regardless of what you call
> > it I shouldn't get an assertion failure.
> > 
> 
> True. It's been fixed in dmd2 though, you get:
> 
> Error: Integer constant expression expected instead of ""
> 
> When it's auto the compiler thinks you are doing static initialisation of a flat array, not an AA. You have to do what Ellery said.

But the compiler (D2) accepts nested aa literals remaining anonymous:
    writeln(["a" : ["b" : "c"]]);	// --> "a:b:c"
(where "auto aa = ..." fails)

Denis
-- -- -- -- -- -- --
vit esse estrany ☣

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