Dynamic array initialisers

[Robert Fraser]

Gide Nwawudu wrote:
> On Thu, 17 Apr 2008 18:10:20 -0400, Chris R. Miller
> <lordSaurontheGreat at gmail.com> wrote:
> 
>> Gide Nwawudu Wrote:
>>
>>> I have the following code, I am attempting to initialise a variable
>>> with a dynamic array. Should the code compile or are lines 6 and 7
>>> just wrong? 
>>>
>>> test.d
>>> ------
>>> import std.stdio;
>>>
>>> void main() {
>>> 	auto  numbers1 = [ 1, 2, 3, 4]; // ok, static array int[4]
>>> 	int[] numbers2 = ([ 1, 2, 3, 4])[]; // ok
>>> 	auto  numbers3 = [ 1, 2, 3, 4][];   // Doesn't compile
>>> 	int[] numbers4 = [ 1, 2, 3, 4][];   // Doesn't compile
>>> 	
>>> 	writefln(typeof(numbers1).stringof);
>>> 	writefln(typeof(numbers2).stringof);
>>> }
>>>
>>>
>>> C:\>dmd test.d
>>> a.d(6): semicolon expected following auto declaration, not '['
>>> a.d(7): semicolon expected, not '['
>> You're not using correct syntax.  The first problem line, auto  numbers3 = [ 1, 2, 3, 4][];, doesn't work because you forgot a comma.  I think you want auto to be evaluated as int[][], however, you have two arrays without a comma seperator.  It should be like this:
>>
>> auto numbers3 = [ 1, 2, 3, 4], [];
>>
>> The second line has the same problem, as well as it's improperly declared.  It should be declared as int[][].
> 
> I was trying create a dynamic array of ints in the same way that
>  "hello"[] creates a dynamic array of chars. Maybe I'm mixing up array
> and string syntaxes?
> 
> Gide

It's implicitly castable to a dynamic array (I think). Just don't use 
auto (isn't that "feature" annoying?):

int[] numbers = [1, 2, 3, 4];