new Type[count] takes too much?

Namespace rswhite4 at googlemail.com
Thu Oct 31 02:42:35 PDT 2013


On Thursday, 31 October 2013 at 09:27:11 UTC, bearophile wrote:
> Namespace:
>
>> T[] buffer = new T[N]; assumes more space than stated (in 
>> average 2010 elements more. See: 
>> http://dpaste.dzfl.pl/af92ad22c). It behaves exactly like 
>> reserve and that is IMO wrong. If I reserve memory with 
>> buffer.reserve(N), I want to have at least N elements. That 
>> behaviour is correct. But if I use new T[N] I mostly want 
>> exactly N elements and no extra space.
>>
>> Thoughts?
>
> In Python if you append items to an array, it sovra-allocates,
Never heard of 'sovra'. What does it mean?

> but if you create an array with the [x] * n syntax, then it 
> creates a list (array) exactly of size n.
>
> Bye,
> bearophile

So you agree with me.



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