MemberQ - checks if array contains a specific element
array any MemberQ -> true
-> false
[3 8 2 9 -1] 2 MemberQ --> true
[3 8 9 -1] 2 MemberQ --> false
The Mathematica implementation is much more general
[1] The Mathematica Book "MemberQ"
Diesmann
10.5.2001
/builddir/build/BUILD/nest-simulator-3.3/nest-simulator-3.3/lib/sli/mathematica.sli