.\"create a mapping from an array
.DT
unique_mapping
$MUDNAME$ driver help
unique_mapping

.SH Name
.SI 5
unique_mapping() - partition an array into groups
.EI

.SH Synopsis
.SI 5
mapping unique_mapping( mixed *arr, string fun, object ob,
			mixed extra, ... );
mapping unique_mapping( mixed *arr, function f, mixed extra, ... );
.EI

.SH Description
.SP 5 5
unique_mapping() evaluates the function `f' with each element of the
array `arr', and constructs a mapping with the return values as keys,
and subarrays of elements that returned value `value' as values.
.EP

.SH See also
.SI 5
unique_array()
.EI
