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Rectangular data grids are vastly used in computer programming. Examples
are matrices, scientific calculations, games, algorithms. Mostly preferred
solutions for representing this kind of data are:

   - Multidimensional arrays (data[][])
   Not safe.

   - Nested STL containers (std::vector<std::vector<T>>)
   Not efficient.

   - External libraries (e.g.; boost::multi_array)
   Requires external libraries.

   - One dimensional containers (e.g.; data[ROW_SIZE * j + i])
   Confusing. Gets more confusing at higher dimensions.


I think STL should provide a standard container library for this need. It
shouldn't be limited to 2D usage, but should also support higher
dimensional matrices if it wouldn't increase complexity of the code.

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<div dir=3D"ltr">Rectangular data grids are vastly used in computer program=
ming. Examples are matrices, scientific calculations, games, algorithms. Mo=
stly preferred solutions for representing this kind of data are:<br><ul><li=
>Multidimensional arrays (<span style=3D"font-family: courier new,monospace=
;">data[][]</span>)<br>Not safe.<br><br></li><li>Nested STL containers (<sp=
an style=3D"font-family: courier new,monospace;">std::vector&lt;std::vector=
&lt;T&gt;&gt;</span>)<br>Not efficient.<br><br></li><li>External libraries =
(e.g.; <span style=3D"font-family: courier new,monospace;">boost::multi_arr=
ay</span>)<br>Requires external libraries.<br><br></li><li>One dimensional =
containers (e.g.; <span style=3D"font-family: courier new,monospace;">data[=
ROW_SIZE * j + i]</span>)<br>Confusing. Gets more confusing at higher dimen=
sions.<br></li></ul><br>I think STL should provide a standard container lib=
rary for this need. It shouldn&#39;t be limited to 2D usage, but should als=
o support higher dimensional matrices if it wouldn&#39;t increase complexit=
y of the code.<br></div>

<p></p>

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..org">std-proposals@isocpp.org</a>.<br />
Visit this group at <a href=3D"http://groups.google.com/a/isocpp.org/group/=
std-proposals/">http://groups.google.com/a/isocpp.org/group/std-proposals/<=
/a>.<br />

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