53 lines
1.4 KiB
C++
53 lines
1.4 KiB
C++
// Copyright 2002 The Trustees of Indiana University.
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// Use, modification and distribution is subject to the Boost Software
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// License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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// Boost.MultiArray Library
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// Authors: Ronald Garcia
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// Jeremy Siek
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// Andrew Lumsdaine
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// See http://www.boost.org/libs/multi_array for documentation.
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#ifndef FOR_EACH_HPP
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#define FOR_EACH_HPP
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//
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// for_each.hpp - Writing an algorithm to transform each element of
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// a multi_array
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//
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#include "boost/type.hpp"
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template <typename Array, typename Element, typename Functor>
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void for_each (const boost::type<Element>& type_dispatch,
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Array A, Functor& xform) {
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for_each(type_dispatch,A.begin(),A.end(),xform);
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}
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template <typename Element, typename Functor>
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void for_each (const boost::type<Element>&,Element& Val, Functor& xform) {
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Val = xform(Val);
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}
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template <typename Element, typename Iterator, typename Functor>
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void for_each (const boost::type<Element>& type_dispatch,
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Iterator begin, Iterator end,
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Functor& xform) {
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while (begin != end) {
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for_each(type_dispatch,*begin,xform);
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++begin;
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}
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}
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template <typename Array, typename Functor>
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void for_each (Array& A, Functor xform) {
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// Dispatch to the proper function
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for_each(boost::type<typename Array::element>(),A.begin(),A.end(),xform);
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}
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#endif // FOR_EACH_HPP
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