foo!(bar) ==> foo{bar} ==> foo[bar] (just Brackets)

[Jarrett Billingsley]

On Tue, Oct 14, 2008 at 6:43 PM, Bruno Medeiros
<brunodomedeiros+spam at com.gmail> wrote:
> Don wrote:
>>
>> Denis Koroskin wrote:
>>>
>>> On Wed, 08 Oct 2008 18:22:21 +0400, superdan <super at dan.org> wrote:
>>>
>>>> Walter Bright Wrote:
>>>>
>>>>> Dee Girl wrote:
>>>>> > I did not follow this group recent. School started. Sorry! I just see
>>>>> > now and please add my vote if possible. I start with D recent and I
>>>>> > remember beginning. foo!(bar) was not pleasant. Like forced
>>>>> > convention with a bad char. And friends I show code never like it. It
>>>>> > is first thing they say why they do not like D. For me foo{bar}
>>>>> > better idea. Thank you, Dee Girl
>>>>>
>>>>> What do your friends think of { } ?
>>>>
>>>> School started. Every one so busy now. But I think does not matter any
>>>> more ^_^
>>>>
>>>> I want to make little idea. Sorry if idea mentioned before (I did not
>>>> read every thread). I think we can look square brackets []. Let me explain
>>>> why.
>>>>
>>>> Paren () is over used in C and in D. Any expression can be in (). And
>>>> adding () is possible in many cases. But it is not same with []. For example
>>>> a:(b) is ambiguous but a:[b] is not. So there are many signs possible after
>>>> symbol and before [. They are:
>>>>
>>>> ~ ! @ # $ % ^ & * - + = | \ / , < . > ? :
>>
>> Not all of them work. Here's a few examples:
>>
>>    enum { d= 3, e = 7 }
>>    int [] a=[1,2];
>>    bool c;
>>    auto k=[e]; // kills =
>>    a ~= c?[d]:[e]; // kills ?
>>    int [] f = c?k:[e]; // kills :
>>    if (f>[e]) {}   // kills <
>>    if (f<[e]) {}   // kills >
>>    auto g = (k,[d]); // kills comma
>>    auto h = k~[d]; // kills ~
>>
>> Array ops will kill + - * / & | % ^
>> Suddenly the list looks pretty short.
>> !@#$\.
>
>
> Hum, what about brackets without any prefix character at all?
>
>  Vector[int, 2] foo;
>  List[Vector[int, 2]] bar;
>  int[3] a = [1, 2, 3]; // array literal here
>  int[int] map;
>  alias DenseMatrix[num] PulType;
>  alias SparseRowsMatrix[num, HashSparseVector] PuuType;
>  alias BiMap[uint, Tuple[uint, uint], BiMapOptions.lhDense] DicType;
>  int var = a[2]; // array indexing here
>
> Hum... doesn't look bad visually. In fact it seems to fit quite nice with
> how associative arrays, and even normal arrays, are declared. Hum, yes, I'm
> personally liking this a lot.
>
> But does it have any ambiguities? Hum, can't think of any off-hand. If an
> identifier appears before a bracket list, it could either be a template
> instantiation, or an array indexation. But the syntax of both is the same,
> so it doesn't need to be distinguished in the parser.
>
> Waddya think, was this discussed before?

Erm,

SomeClass[3] a; // template or array?