unique_mapping

来自「C实现的MUD,对大家基本入门网络游戏很有帮助!」· 代码 · 共 25 行

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          unique_mapping() - create a mapping from an array based on a
          function

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          mapping unique_mapping( mixed *arr, string fun, object ob,
                                    mixed extra, ... );
          mapping unique_mapping( mixed *arr, function f, mixed extra, ... );

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          Returns a mapping built in the following manner:

          members for which the function returns the same value are
          grouped together, and associated with the return value as
          the key.

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          filter_array(3), sort_array(3), map(3)

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