Memory allocation faile on string concat

[Steven Schveighoffer]

On Wed, 10 Nov 2010 13:55:26 -0500, sybrandy <sybrandy at gmail.com> wrote:

> On 11/10/2010 11:33 AM, Xie wrote:
>> Can't run a simple program. What's wrong, GC?
>>
>> import std.stdio;
>> import std.date;
>>
>> void f0()
>> {
>> 	wstring a[];
>>
>> 	foreach(i; 0 .. 100_000_000)
>> 	{
>>    		a ~= " "w;
>>    	}
>> }
>>
>> void main()
>> {
>> 	auto r = benchmark!(f0)(1);
>> 	writeln(r, "ms");
>> }
>>
>> DMD 2.047
>
> In addition to what everybody else is suggesting you look at, you may  
> want to look into using an appender (defined in std.array).  Not sure if  
> it will help with the memory usage, but it's supposed to be faster for  
> appending data to an array.

Just tried it, Appender is actually slower.  This *is* a problem, it  
should be way faster than builtin array appending.

I will look into it.

-Steve