Strange Compile Error when concatenating arrays

[John Colvin]

On Wednesday, 9 April 2014 at 19:39:13 UTC, Jeroen Bollen wrote:
> On Wednesday, 9 April 2014 at 19:35:49 UTC, Jeroen Bollen wrote:
>> When I concatenate arrays like this, I get a strange compile 
>> error:
>>
>> Error: incompatible types for ((cast(int)a) ~ (cast(int)b)): 
>> 'int' and 'int'
>>
>> Code:
>>
>> public ubyte[] toArray(ubyte a, ubyte b, ubyte c) {
>> 	return a ~ b ~ c;
>> }
>
> Oh derp I already figured it out. It still is a strange error 
> message though.

Not really. It gives you the expression, tells you the types are 
incompatible and tells you what those types were. The reason why 
you get int is because operations on integral types are promoted 
to int.

public ubyte[] toArray(ubyte a, ubyte b, ubyte c) { return [a, b, 
c]; }