(...) _ ZZ -- get element from list

(...) _ ZZ -- get element from list

x_i -- provides the i-th element of the sequence x.

This is merely a convenient synonym for x#i.

See also:

BasicList # ZZ -- get element from list

Synopsis of use:

Operator: _

Class of argument 1: Sequence

Class of argument 2: ZZ

Code:

     -- ../m2/underscore.m2:3
     Sequence _ ZZ := List _ ZZ := (s,i) -> s#i