D v2.012 currently allows the following:

int[char[]] eroMatrix = ["SA":1, "SB":2, "SP":3, "KK":4];
foreach(k, v; eroMatrix)
  writefln(k, "->", v);

// output:
SA->1
SB->2
SP->3
KK->4

However attempts to directly access a "key:value" pair results in an ArrayBoundsError. Any idea why? Is there a temporary workaround available?

writefln(eroMatrix["SA"]) // ArrayBoundsError

Thanks,
Andrew

On Mon, 31 Mar 2008 07:52:17 +0200, Tyro[a.c.edwards] <no@spam.com> wrote:

> D v2.012 currently allows the following:
>
> int[char[]] eroMatrix = ["SA":1, "SB":2, "SP":3, "KK":4];
> foreach(k, v; eroMatrix)
>   writefln(k, "->", v);
>
> // output:
> SA->1
> SB->2
> SP->3
> KK->4
>
> However attempts to directly access a "key:value" pair results in an ArrayBoundsError. Any idea why? Is there a temporary workaround available?
>
> writefln(eroMatrix["SA"]) // ArrayBoundsError
>
> Thanks,
> Andrew

Weird. This works under DMD 1.026, and under DMD 2.012 if I don't use the literal.

"Tyro[a.c.edwards]" <no@spam.com> wrote in message news:fspu6h$2kps$1@digitalmars.com...
>D v2.012 currently allows the following:
>
> int[char[]] eroMatrix = ["SA":1, "SB":2, "SP":3, "KK":4];
> foreach(k, v; eroMatrix)
>  writefln(k, "->", v);
>
> // output:
> SA->1
> SB->2
> SP->3
> KK->4
>
> However attempts to directly access a "key:value" pair results in an ArrayBoundsError. Any idea why? Is there a temporary workaround available?
>
> writefln(eroMatrix["SA"]) // ArrayBoundsError
>
> Thanks,
> Andrew

I would have expected something like:

writefln(eroMatrix[eroMatrix.keys[0]]);

to work, but it doesn't.

O_o

Jarrett Billingsley wrote:
> "Tyro[a.c.edwards]" <no@spam.com> wrote in message news:fspu6h$2kps$1@digitalmars.com...
>> D v2.012 currently allows the following:
>>
>> int[char[]] eroMatrix = ["SA":1, "SB":2, "SP":3, "KK":4];
>> foreach(k, v; eroMatrix)
>>  writefln(k, "->", v);
>>
>> // output:
>> SA->1
>> SB->2
>> SP->3
>> KK->4
>>
>> However attempts to directly access a "key:value" pair results in an ArrayBoundsError. Any idea why? Is there a temporary workaround available?
>>
>> writefln(eroMatrix["SA"]) // ArrayBoundsError
>>
>> Thanks,
>> Andrew
> 
> I would have expected something like:
> 
> writefln(eroMatrix[eroMatrix.keys[0]]);
> 
> to work, but it doesn't.
> 
> O_o 
> 

It seems matter only the _method_ of initialization.

int[char[]] eroMatrix = ["SA":1, "SB":2, "SP":3, "KK":4]; // literal

eroMatrix["00"]	= 9 ; // direct

foreach(k; eroMatrix.keys.sort) {
	writef(k, "->", typeid(typeof(k)), "->") ;
	writefln( eroMatrix[k]);
 }

>>> OUTPUT:
00->const(char)[]->9
KK->const(char)[]->
Error: ArrayBoundsError aatst(10)

PS:D 2.0 change the key's type from char[] to const(char)[], D 1.0 not.

>