C++ Library containing a lot of needful things: Stack Trace, Command Line Parser, Resource Handling, Configuration Files, Unix Command Execution, Directories, Regular Expressions, Tokenizer, Function Trace, Standard Extensions.
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/** @file
$Id$
$Date$
$Author$
@copy © Marc Wäckerlin
@license LGPL, see file <a href="license.html">COPYING</a>
$Log$
Revision 1.3 2005/04/07 20:48:20 marc
docu: new doxygen, new grouping
Revision 1.2 2004/12/20 07:40:36 marc
documentation improved, new grouping
Revision 1.1 2004/10/07 09:31:30 marc
new feature
*/
#ifndef __MRW__SET__HPP__
#define __MRW__SET__HPP__
#include <set>
#include <mrw/exception.hpp>
#include <mrw/string.hpp>
/** @addtogroup StdExtSTL
*/
//@{
/** @defgroup StdExtset set
*/
//@{
/** @brief insert a value in a set
@code
std::set<int> test;
test<<1<<2<<3<<4<<5<<6<<7<<8;
@endcode
@throw mrw::invalid_argument, if element is already in set
@param l a set of values
@param o a value to be inserted into set @c l
@pre #include <mrw/set.hpp>
*/
template <typename T, class C, typename A>
std::set<T, C, A>& operator<<(std::set<T, C, A>& l, const T& o)
throw(std::exception) {
if (!l.insert(o).second)
throw mrw::invalid_argument(std::string(__FILE__ ":")+__LINE__+
": std::set<>&"
" operator<<(std::set<>&, const T&),"
"set element already exists");
return l;
}
/** @brief extract the first value of a set
@code
std::set<int> test;
test<<1<<2<<3<<4<<5<<6<<7<<8;
int i1(0), i2(0), i3(0), i4(0);
test>>i1>>i2>>i3>>i4;
// now: i1==1 i2==2 i3==3 i4==4 test=={5, 6, 7, 8}
@endcode
@param l a set of values
@param o a value to be extracted from set @c l
@throw mrw::length_error, if set was empty on entry
@note when something is extracted from a set, it is removed
from the set, that means after every shift the set is
shortened by the shifted element
@pre #include <mrw/set.hpp>
*/
template <typename T, class C, typename A>
std::set<T, C, A>& operator>>(std::set<T, C, A>& l, T& o)
throw(std::exception) {
typename std::set<T, C, A>::iterator it(l.begin());
if (it==l.end())
throw mrw::length_error(std::string(__FILE__ ":")+__LINE__+
": std::set<>& operator>>(std::set<>&, T&),"
" set is empty");
o = *it;
l.erase(it);
return l;
}
//@}
//@}
#endif