| 93 | */ |
| 94 | template< typename SequenceSequenceT, typename Range1T, typename PredicateT> |
| 95 | inline typename range_value<SequenceSequenceT>::type |
| 96 | join_if( |
| 97 | const SequenceSequenceT& Input, |
| 98 | const Range1T& Separator, |
| 99 | PredicateT Pred) |
| 100 | { |
| 101 | // Define working types |
| 102 | typedef typename range_value<SequenceSequenceT>::type ResultT; |
| 103 | typedef typename range_const_iterator<SequenceSequenceT>::type InputIteratorT; |
| 104 | |
| 105 | // Parse input |
| 106 | InputIteratorT itBegin=::boost::begin(Input); |
| 107 | InputIteratorT itEnd=::boost::end(Input); |
| 108 | |
| 109 | // Construct container to hold the result |
| 110 | ResultT Result; |
| 111 | |
| 112 | // Roll to the first element that will be added |
| 113 | while(itBegin!=itEnd && !Pred(*itBegin)) ++itBegin; |
| 114 | // Add this element |
| 115 | if(itBegin!=itEnd) |
| 116 | { |
| 117 | detail::insert(Result, ::boost::end(Result), *itBegin); |
| 118 | ++itBegin; |
| 119 | } |
| 120 | |
| 121 | for(;itBegin!=itEnd; ++itBegin) |
| 122 | { |
| 123 | if(Pred(*itBegin)) |
| 124 | { |
| 125 | // Add separator |
| 126 | detail::insert(Result, ::boost::end(Result), ::boost::as_literal(Separator)); |
| 127 | // Add element |
| 128 | detail::insert(Result, ::boost::end(Result), *itBegin); |
| 129 | } |
| 130 | } |
| 131 | |
| 132 | return Result; |
| 133 | } |
| 134 | |
| 135 | } // namespace algorithm |
| 136 |
nothing calls this directly
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