Re: Appending immutable char implicit cast to int, bug or feature?

[Ali Çehreli]

On 12/05/2012 09:30 AM, ixid wrote:
This is simple code to create all genetic combinations from two organisms.
string[] mixGenes(string a, string b) {
string[] result;

foreach(i;0..2)
foreach(j;0..2)
foreach(k;2..4)
foreach(m;2..4)
result ~= [a[i]] ~ [b[j]] ~ [a[k]] ~ [b[m]];

return result;
}

This works, however when I remove the brackets:

result ~= a[i] ~ b[j] ~ a[k] ~ b[m];

I get the error:

Error: incompatible types for ((cast(int)a[cast(uint)i]) ~
(cast(int)b[cast(uint)j])): 'int' and 'int'

Why, when trying to append immutable chars to make a string, has it
decided to implicitly cast them to int?

I don't know where that cast occurs but I wanted to state the obvious: 
Operator ~ is defined only for arrays.

Ali