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< p > Library Version 11.2.5.2< / p >
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< th colspan = "3" align = "center" > equal_range< / th >
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< h2 class = "title" style = "clear: both" > < a id = "stldb_mapequal_range" > < / a > equal_range< / h2 >
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equal_range(const key_type & x) const
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< p > Find the range within which all keys equal to specified key x. < / p >
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< p > The target key to find. < / p >
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< h4 class = "title" > < a id = "id3602995" > < / a > Return Value< / h4 >
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< p > The range [first, last). < / p >
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< p > < a class = "ulink" href = "http://www.cplusplus.com/reference/stl/map/equal_range/" target = "_top" > http://www.cplusplus.com/reference/stl/map/equal_range/< / a > < / p >
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equal_range(const key_type & x,
bool readonly=false)
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< p > Find the range within which all keys equal to specified key x. < / p >
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< h5 class = "title" > < a id = "id3602848" > < / a > x< / h5 >
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< p > The target key to find. < / p >
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< h5 class = "title" > < a id = "id3602894" > < / a > readonly< / h5 >
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< p > Whether the returned iterator is readonly. < / p >
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< h4 class = "title" > < a id = "id3602900" > < / a > Return Value< / h4 >
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< p > The range [first, last). < / p >
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< p > < a class = "ulink" href = "http://www.cplusplus.com/reference/stl/map/equal_range/" target = "_top" > http://www.cplusplus.com/reference/stl/map/equal_range/< / a > < / p >
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< h3 class = "title" > < a id = "id3602925" > < / a > Group: Searching Functions< / h3 >
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< p > The following functions are returning iterators, and they by default return read-write iterators.< / p >
< p > If you intend to use the returned iterator only to read, you should call the const version of each function using a const reference to this container. Using const iterators can potentially promote concurrency a lot. You can also set the readonly parameter to each non-const version of the functions to true if you don't use the returned iterator to write, which also promotes concurrency and overall performance. < / p >
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