XOR a bunch of data

[Dave Akers]

Charles wrote:
>> Am I not allowed to XOR a bunch of data like this X[] ^= Y[] ???
>> Thanks!
> 
> Not yet, those are whats been dubbed 'array arithematic operations' , and I
> think are planned for 2.0 ( hopefully sooner , can't really call them
> first-class arrays w/o em! ).
> 
> It would probably look like : X ^= Y ;
> 
> Thanks,
> Charlie
> 
> 

Any idea how this will be implemented? something like

ArrayXor(ubyte[] X, ubyte[] Y) {
	for (int i=0; i<X.length; i++) {
		X[i] ^= Y[i % Y.length];
	}
}


> 
> "Tiago Gasiba" <tiago.gasiba at gmail.com> wrote in message
> news:dj0e3m$cku$1 at digitaldaemon.com...
>> Hi all,
>>
>>   Why can't I do the following?
>>
>> --- code ---
>> import std.c.stdio;
>> import std.c.stdlib;
>>
>> int main( ){
>>   ulong[10] X, Y;
>>   X[] = 2;
>>   Y[] = 5;
>>   X[] ^= Y[];
>>
>>   foreach( ulong u; X )
>>     printf("%lu\n",u);
>>
>>   return 0;
>> }
>> --- code ---
>>
>> The compiler complains:
>> test.d(8): slice expression X[] is not a modifiable lvalue
>> test.d(8): 'X[]' is not a scalar, it is a ulong[]
>> test.d(8): 'X[]' is not of integral type, it is a ulong[]
>> test.d(8): 'Y[]' is not of integral type, it is a ulong[]
>>
>> What I want to do is simply this:
>>
>>   for( int ii=0; ii<X.length; ii++ )
>>     X[ii] ^= Y[ii];
>>

what if Y.length < X.length... array bounds error...


>> Am I not allowed to XOR a bunch of data like this X[] ^= Y[] ???
>> Thanks!
>>
>> Best,
>> Tiago Gasiba
>> --
>> Tiago Gasiba (MSc.) - http://www.gasiba.de
>> Everything should be made as simple as possible, but not simpler.
> 
>