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--- status: DRAFT
--- author(s): from before, MES
--- notes:
document {
Key => {member,
(member,Thing,Set),
(member,Thing,VisibleList)},
Headline => "test membership in a list or set",
Usage => "member(e,x)",
Inputs => {
"e" => Thing,
"x" => {ofClass {List, Sequence, Set}}
},
Outputs => {
Boolean => "whether e is in the list, sequence, or set x"
},
EXAMPLE {
"member(c,{a,b,c,d,e})",
"member(f,(a,b,c,d,e))",
"member(3,set{1,2,5,6})"
},
SeeAlso => {positions, Set}
}
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