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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77 lines
1.9 KiB
77 lines
1.9 KiB
/** @file |
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$Id$ |
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$Date$ |
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$Author$ |
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@copy © Marc Wäckerlin |
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@license LGPL, see file <a href="license.html">COPYING</a> |
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$Log$ |
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Revision 1.1 2004/10/07 09:31:30 marc |
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new feature |
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*/ |
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#ifndef __MRW__MULTISET__HPP__ |
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#define __MRW__MULTISET__HPP__ |
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#include <set> |
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#include <mrw/exception.hpp> |
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#include <mrw/string.hpp> |
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/** @addtogroup StdExt |
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*/ |
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//@{ |
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/** @brief insert a value in a multiset |
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@code |
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std::multiset<int> test; |
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test<<1<<2<<3<<4<<5<<6<<7<<8; |
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@endcode |
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@param l a multiset of values |
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@param o a value to be inserted into multiset @c l |
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@pre #include <mrw/multiset.hpp> |
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*/ |
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template <typename T, class C, typename A> |
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std::multiset<T, C, A>& operator<<(std::multiset<T, C, A>& l, const T& o) throw(std::bad_exception) { |
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l.insert(o); |
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return l; |
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} |
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/** @brief extract the first value of a multiset |
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@code |
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std::multiset<int> test; |
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test<<1<<2<<3<<4<<5<<6<<7<<8; |
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int i1(0), i2(0), i3(0), i4(0); |
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test>>i1>>i2>>i3>>i4; |
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// now: i1==1 i2==2 i3==3 i4==4 test=={5, 6, 7, 8} |
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@endcode |
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@param l a multiset of values |
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@param o a value to be extracted from multiset @c l |
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@throw mrw::length_error, if set was empty on entry |
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@note when something is extracted from a multiset, it is removed |
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from the multiset, that means after every shift the multiset is |
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shortened by the shifted element |
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@pre #include <mrw/string.hpp> |
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*/ |
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template <typename T, class C, typename A> |
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std::multiset<T, C, A>& operator>>(std::multiset<T, C, A>& l, T& o) throw(std::exception) { |
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typename std::multiset<T, C, A>::iterator it(l.begin()); |
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if (it==l.end()) |
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throw mrw::length_error(std::string(__FILE__ ":")+__LINE__+ |
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": std::multiset<>& operator>>(std::multiset<>&, T&)," |
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" multiset is empty"); |
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o = *it; |
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l.erase(it); |
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return l; |
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} |
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//@} |
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#endif
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