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| 26 | <a name="id1044106-bb"></a><div class="titlepage"></div> |
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| 27 | <div class="refnamediv"> |
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| 28 | <h2><span class="refentrytitle">Function template join_if</span></h2> |
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| 29 | <p>boost::algorithm::join_if — Conditional join algorithm. </p> |
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| 30 | </div> |
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| 31 | <h2 xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv-title">Synopsis</h2> |
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| 32 | <div xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv"><pre class="synopsis"> |
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| 33 | <span class="bold"><strong>template</strong></span><<span class="bold"><strong>typename</strong></span> SequenceSequenceT, <span class="bold"><strong>typename</strong></span> Range1T, <span class="bold"><strong>typename</strong></span> PredicateT> |
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| 34 | <span class="type">range_value< SequenceSequenceT >::type</span> |
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| 35 | join_if(<span class="bold"><strong>const</strong></span> SequenceSequenceT & Input, Range1T & Separator, |
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| 36 | PredicateT Pred);</pre></div> |
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| 37 | <div class="refsect1" lang="en"> |
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| 38 | <a name="id1676507"></a><h2>Description</h2> |
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| 39 | <p>This algorithm joins all strings in a 'list' into one long string. Segments are concatenated by given separator. Only segments that satisfy the predicate will be added to the result.</p> |
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| 40 | <p> |
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| 41 | |
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| 42 | |
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| 43 | </p> |
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| 44 | <div class="variablelist"><table border="0"> |
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| 45 | <col align="left" valign="top"> |
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| 46 | <tbody> |
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| 47 | <tr> |
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| 48 | <td> |
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| 49 | <span class="term">Parameters:</span></td> |
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| 50 | <td><div class="variablelist"><table border="0"> |
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| 51 | <col align="left" valign="top"> |
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| 52 | <tbody> |
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| 53 | <tr> |
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| 54 | <td> |
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| 55 | <span class="term"><code class="computeroutput">Input</code></span></td> |
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| 56 | <td><p>A container that holds the input strings. It must be a container-of-containers. </p></td> |
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| 57 | </tr> |
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| 58 | <tr> |
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| 59 | <td> |
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| 60 | <span class="term"><code class="computeroutput">Pred</code></span></td> |
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| 61 | <td><p>A segment selection predicate </p></td> |
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| 62 | </tr> |
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| 63 | <tr> |
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| 64 | <td> |
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| 65 | <span class="term"><code class="computeroutput">Separator</code></span></td> |
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| 66 | <td><p>A string that will separate the joined segments. </p></td> |
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| 67 | </tr> |
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| 68 | </tbody> |
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| 69 | </table></div></td> |
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| 70 | </tr> |
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| 71 | <tr> |
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| 72 | <td> |
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| 73 | <span class="term">Returns:</span></td> |
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| 74 | <td><p>Concatenated string.</p></td> |
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| 75 | </tr> |
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| 76 | <tr> |
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| 77 | <td> |
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| 78 | <span class="term">Notes:</span></td> |
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| 79 | <td><p>This function provides the strong exception-safety guarantee </p></td> |
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| 80 | </tr> |
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| 81 | </tbody> |
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| 86 | <td align="left"></td> |
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| 87 | <td align="right"><small>Copyright © 2002-2004 Pavol Droba</small></td> |
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