Re: [Mingw-users] std::out_of_range undefined

[Aaron W. L. <aar...@aa...>]

Greg Chicares wrote:

> To ensure portability, explicitly include the header for
> every standard-library facility you use. Here's a classic

Since "use" may be difficult to define, and I think getting this right
is very important (We don't want to include headers if we really don't
need to.), let me offer my own personal stylistic guideline.

If you use a name (such as a macro or function) that is not declared
within the file you are working in (whether it is a normal source file
or a header file), include the header who's interface (presumably
documented) specifies that it shall declare that name.

The main consequence of this is that you include headers--such as
<utility>--even when you know that the needed declaration must be
present anyway.  A second consequence of this is that you don't include
headers if you are 'using' an object or type without actually ever
knowing its name.  This reduces coupling in a desirable manner.


Aaron W. LaFramboise