Re: vector/memory

Tech-Archive recommends: Fix windows errors by optimizing your registry

From: Arnaud Debaene (adebaene_at_club-internet.fr)
Date: 01/05/05 

Date: Wed, 5 Jan 2005 23:13:34 +0100

Kyle wrote:
> Whats the way to detect allocation failure in vector ?
> If the only answer is "using exceptin handling" i would apriciate some
> insight on it

Whenever you do an operation that could do a memory allocation (eg, an
insert / push_back / reserve) in the vector, put the operation in a try
block and catch std::bad_alloc exception :
try
{
   myVector.push_back(new_value);
}
catch (std::bad_alloc&)
{
   //allocation failure, do whatever you want to recover...
}

If you want to optimize performances, try to use vector::reserve whenever
you can.

Arnaud
MVP - VC

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