// Functor implementations -*- C++ -*-
-// Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2009
+// Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2009, 2010, 2011
// Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
/** @file backward/binders.h
* This is an internal header file, included by other library headers.
- * You should not attempt to use it directly.
+ * Do not attempt to use it directly. @headername{functional}
*/
-#ifndef _GLIBCXX_BINDERS_H
-#define _GLIBCXX_BINDERS_H 1
+#ifndef _BACKWARD_BINDERS_H
+#define _BACKWARD_BINDERS_H 1
-_GLIBCXX_BEGIN_NAMESPACE(std)
+namespace std _GLIBCXX_VISIBILITY(default)
+{
+_GLIBCXX_BEGIN_NAMESPACE_VERSION
// 20.3.6 binders
/** @defgroup binders Binder Classes
* @ingroup functors
*
- * Binders turn functions/functors with two arguments into functors with
- * a single argument, storing an argument to be applied later. For
- * example, a variable @c B of type @c binder1st is constructed from a
- * functor @c f and an argument @c x. Later, B's @c operator() is called
- * with a single argument @c y. The return value is the value of @c f(x,y).
- * @c B can be "called" with various arguments (y1, y2, ...) and will in
- * turn call @c f(x,y1), @c f(x,y2), ...
+ * Binders turn functions/functors with two arguments into functors
+ * with a single argument, storing an argument to be applied later.
+ * For example, a variable @c B of type @c binder1st is constructed
+ * from a functor @c f and an argument @c x. Later, B's @c
+ * operator() is called with a single argument @c y. The return
+ * value is the value of @c f(x,y). @c B can be @a called with
+ * various arguments (y1, y2, ...) and will in turn call @c
+ * f(x,y1), @c f(x,y2), ...
*
- * The function @c bind1st is provided to save some typing. It takes the
+ * The function @c bind1st is provided to save some typing. It takes the
* function and an argument as parameters, and returns an instance of
* @c binder1st.
*
* The type @c binder2nd and its creator function @c bind2nd do the same
* thing, but the stored argument is passed as the second parameter instead
- * of the first, e.g., @c bind2nd(std::minus<float>,1.3) will create a
+ * of the first, e.g., @c bind2nd(std::minus<float>(),1.3) will create a
* functor whose @c operator() accepts a floating-point number, subtracts
- * 1.3 from it, and returns the result. (If @c bind1st had been used,
- * the functor would perform "1.3 - x" instead.
+ * 1.3 from it, and returns the result. (If @c bind1st had been used,
+ * the functor would perform <em>1.3 - x</em> instead.
*
* Creator-wrapper functions like @c bind1st are intended to be used in
- * calling algorithms. Their return values will be temporary objects.
+ * calling algorithms. Their return values will be temporary objects.
* (The goal is to not require you to type names like
* @c std::binder1st<std::plus<int>> for declaring a variable to hold the
- * return value from @c bind1st(std::plus<int>,5).
+ * return value from @c bind1st(std::plus<int>(),5).
*
* These become more useful when combined with the composition functions.
*
+ * These functions are deprecated in C++11 and can be replaced by
+ * @c std::bind (or @c std::tr1::bind) which is more powerful and flexible,
+ * supporting functions with any number of arguments. Uses of @c bind1st
+ * can be replaced by @c std::bind(f, x, std::placeholders::_1) and
+ * @c bind2nd by @c std::bind(f, std::placeholders::_1, x).
* @{
*/
/// One of the @link binders binder functors@endlink.
typename _Operation::result_type
operator()(typename _Operation::second_argument_type& __x) const
{ return op(value, __x); }
- } _GLIBCXX_DEPRECATED_ATTR;
+ } _GLIBCXX_DEPRECATED;
/// One of the @link binders binder functors@endlink.
template<typename _Operation, typename _Tp>
typename _Operation::result_type
operator()(typename _Operation::first_argument_type& __x) const
{ return op(__x, value); }
- } _GLIBCXX_DEPRECATED_ATTR;
+ } _GLIBCXX_DEPRECATED;
/// One of the @link binders binder functors@endlink.
template<typename _Operation, typename _Tp>
}
/** @} */
-_GLIBCXX_END_NAMESPACE
+_GLIBCXX_END_NAMESPACE_VERSION
+} // namespace
-#endif /* _GLIBCXX_BINDERS_H */
+#endif /* _BACKWARD_BINDERS_H */
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