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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 | \DOC setify
\TYPE {setify : (* list -> * list)}
\SYNOPSIS
Removes repeated elements from a list. Makes a list into a `set'.
\DESCRIBE
{setify l} removes repeated elements from {l}, leaving the last occurrence of
each duplicate in the list.
\FAILURE
Never fails.
\EXAMPLE
{
#setify [1;2;3;1;4;3];;
[2; 1; 4; 3] : int list
}
\COMMENTS
Perhaps the first occurrence of each duplicate should be left in the list, not
the last? However, other functions may rely on the ordering currently used.
\SEEALSO
distinct.
\ENDDOC
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