File: set_equal.doc

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\DOC set_equal

\TYPE {set_equal : (* list -> * list -> bool)}

\SYNOPSIS
Tests two `sets' for equality.

\DESCRIBE
{set_equal l1 l2} returns {true} if every element of {l1} appears in {l2} and
every element of {l2} appears in {l1}. Otherwise it returns {false}.

\FAILURE
Never fails.

\EXAMPLE
{
#set_equal [1;2] [2;1;2];;
true : bool

#set_equal [1;2] [1;3];;
false : bool
}
\SEEALSO
setify, union, intersect, subtract.

\ENDDOC