From:	njchack AT my-deja DOT com
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: vector of vectors
Date:	Fri, 08 Oct 1999 01:22:02 GMT
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In article "Bradley A. Town" <btown AT nospam DOT com>
wrote:
> Nick,
>     Check out section 16.3.3 in
Stroustrup.  "...operator[]() provides
> unchecked access, whereas at() does a range
check and throw out_of_range if
> an index is out of range."

Yes, but not quite the problem I'm trying to
solve. I understand about checked or unchecked
indexing, but how do I pre-allocate for a
particular size of matrix?

vector<int> a(10); allocates a one-d vector of
ten elements. I want to do something like

vector< vector<int>(10) > a(10); to allocate a
matrix with ten rows and ten columns, instead of
doing

int a[10][10];

I'm not sure this is possible with the STL.
Perhaps I need to write a two-d matrix class?

Nick.



>
> ---
> Bradley A. Town
> Lead Software Engineer
> Test Products, Inc.
> E-mail:  btown at testprod.com
>
>



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