[Article Contest, first draft] D Slices

[Steven Schveighoffer]

On Wed, 18 May 2011 16:47:47 -0400, Alex_Dovhal <alex_dovhal at yahoo.com>  
wrote:

> Nice article, very pleasured to read. One thing that strained my mind -  
> this
> exaple:
>
>> import std.stdio;
>>
>> char[] fillAs(char[] buf, size_t num)
>> {
>>   if(buf.length < num)
>>      buf.length = num; // increase buffer length to be able to hold the
>> A's
>>   buf[0..num] = 'A';   // assign A to all the elements
>>   return buf[0..num];  // return the result
>> }
>>
>> void main()
>> {
>>   char[] str = new char[10];   str[] = 'B';
>>   fillAs(str, 20);     // buffer must be reallocated
>>   writeln(str);        // "BBBBBBBBBB"
> (1)
>>   fillAs(str, 12);     // buffer can be extended in place!
>>   writeln(str);        // "AAAAAAAAAA";
>> }
>
> Please add in (1) assert(str.capacity == 15);

hm... I think I'll add a comment instead, since I haven't discussed the  
capacity property yet.  People might not get what that means.

Thanks for the suggestion!

-Steve