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add ptr_fun, mem_fun, mem_fun_ref

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bolero-MURAKAMI 2012-04-11 23:28:29 +09:00
parent 4a8e938887
commit f86d17d0d4
46 changed files with 322 additions and 76 deletions
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53
sprout/functional/ptr_fun.hpp Normal file
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#ifndef SPROUT_FUNCTIONAL_PTR_FUN_HPP
#define SPROUT_FUNCTIONAL_PTR_FUN_HPP
#include <sprout/config.hpp>
#include <sprout/functional/base.hpp>
namespace sprout {
// D.8.2.1 adaptors (deprecated)
template<typename Arg, typename Result>
class pointer_to_unary_function
: public sprout::unary_function<Arg, Result>
{
protected:
Result (*ptr_)(Arg);
public:
pointer_to_unary_function() = default;
explicit SPROUT_CONSTEXPR pointer_to_unary_function(Result (*x)(Arg))
: ptr_(x)
{}
SPROUT_CONSTEXPR Result operator()(Arg x) const {
return ptr_(x);
}
};
template<typename Arg, typename Result>
inline SPROUT_CONSTEXPR sprout::pointer_to_unary_function<Arg, Result> ptr_fun(Result (*x)(Arg)) {
return sprout::pointer_to_unary_function<Arg, Result>(x);
}
template<typename Arg1, typename Arg2, typename Result>
class pointer_to_binary_function
: public sprout::binary_function<Arg1, Arg2, Result>
{
protected:
Result (*ptr_)(Arg1, Arg2);
public:
pointer_to_binary_function() = default;
explicit SPROUT_CONSTEXPR pointer_to_binary_function(Result (*x)(Arg1, Arg2))
: ptr_(x)
{}
SPROUT_CONSTEXPR Result operator()(Arg1 x, Arg2 y) const {
return ptr_(x, y);
}
};
template<typename Arg1, typename Arg2, typename Result>
inline SPROUT_CONSTEXPR sprout::pointer_to_binary_function<Arg1, Arg2, Result> ptr_fun(Result (*x)(Arg1, Arg2)) {
return sprout::pointer_to_binary_function<Arg1, Arg2, Result>(x);
}
} // namespace sprout
#endif // #ifndef SPROUT_FUNCTIONAL_PTR_FUN_HPP