permlib 0.2.9
Library for permutation computations
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identity_predicate.h
1// ---------------------------------------------------------------------------
2//
3// This file is part of PermLib.
4//
5// Copyright (c) 2009-2012 Thomas Rehn <thomas@carmen76.de>
6// All rights reserved.
7//
8// Redistribution and use in source and binary forms, with or without
9// modification, are permitted provided that the following conditions
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11// 1. Redistributions of source code must retain the above copyright
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30// ---------------------------------------------------------------------------
31
32
33#ifndef IDENTITYPREDICATE_H_
34#define IDENTITYPREDICATE_H_
35
36#include <boost/foreach.hpp>
37
38namespace permlib {
39
41template <class PERM>
42class IdentityPredicate : public std::unary_function<typename PERM::ptr, bool> {
43public:
45 bool operator()(const typename PERM::ptr &p) const {
46 return p->isIdentity();
47 }
48};
49
50}
51
52#endif // -- IDENTITYPREDICATE_H_
predicate matching a permutation if it stabilizes a given list of points pointwise
Definition: identity_predicate.h:42
bool operator()(const typename PERM::ptr &p) const
evaluate predicate
Definition: identity_predicate.h:45