File: mem.doc

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\DOC mem

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

\SYNOPSIS
Tests whether a list contains a certain member.

\DESCRIBE
{mem x [x1;...;xn]} returns {true} if some {xi} in the list is equal to {x}.
Otherwise it returns {false}.

\FAILURE
Never fails.

\SEEALSO
find, tryfind, exists, forall, assoc, rev_assoc.

\ENDDOC