map_delete

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          map_delete() - remove a (key, value) pair from a mapping
          based on the key

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          void map_delete( mapping m, mixed element );

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          map_delete removes the (key, value) from the mapping m that
          has key equal to element.

          For example, given:

               mapping names;

               names = ([]);
               names["truilkan"] = "john";
               names["wayfarer"] = "erik";
               names["jacques"] = "dwayne";

          Then:

               map_delete(names,"truilkan");

          causes the mapping 'names' to be equal to:

               (["wayfarer" : "erik", "jacques" : "dwayne"])

          keys(names) will not contain "truilkan" after
          map_delete(names,"truilkan") is called [unless ("truilkan",
          *) is subsequently added back to the mapping].

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          allocate_mapping(3)

     Page 1                                          (printed 3/16/95)