Re: Beginer problem: variable array size

[Ted Dennison <dennison@telepath.com>]

Hyman Rosen wrote:
> Warren W. Gay VE3WWG wrote:
> 
>> The C++ STL for example,
>> would (I assume) not cut it for many/most realtime systems because of
>> the amount of dynamic memory assignments that take place behind the
>> scenes in the STL routines
> 
> 
> The amount of memory allocation in the STL is predictable.

Well, no. Its suggested that certian structures not allocate memory 
under certian cirucumstances (eg: Vectors aren't supposed to allocate 
memory during the rest of their runtime if you reserve a certian size up 
front and don't exceed those bounds). But there is no *requirement* that 
any STL template actually works that way. If you care, you really have 
to verify this with your vendor, or decipher the templates to see for 
yourself (good luck!)

To make matters worse, the C++ compilers in the most common use by far, 
Microsoft's Visual C++ 6 and below, use a version of the STL that is 
pre-standard. Those compilers also don't support automatic instantiation 
properly. So many "standard" source code examples won't work on most C++ 
compilers.

> 
>> Bottom line: The C++ programmer likes to criticize the Ada world
> 
> 
> The C++ programmer ignores the Ada world, I'm afraid.

...not to mention their own standard.