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To combine two lists to form a third list, use
append(Prefix, Suffix, List)
.
To analyze a list into its component lists in various ways, use
append/3
with List instantiated to a proper list. The
reference page for append/3
includes examples of its usage,
including backtracking.
To check the length of a list call length(List, Length)
.
To produce a list of a certain length, use length/2
with
Length instantiated and List partly uninstantiated.
To check if a term is the element of a list, use memberchk(Element, List)
.
To enumerate the elements of a list via backtracking, use member(Element, List)
.
To check that a term is NOT the element of a list, use nonmember(Element, List)
,
which is equivalent to \+member(Element, List)
.