A dummy operator with low precedence. When parsing subexpressions, we always stop when we
reach an operator of lower precedence than the "current precedence". For example, when
parsing 1 + 2 * 3 + 4, we'll stop parsing the subexpression * 3 + 4 when
we reach the + because it has lower precedence than *. This dummy operator,
then, behaves like + when the minimum precedence is *. We also return it
if we're looking for an operator and don't find one. If this operator is ⊙, it's as
if our expressions are bracketed with it, like ⊙ 1 + 2 * 3 + 4 ⊙.
Returns the enum constant of this type with the specified name.
The string must match exactly an identifier used to declare an
enum constant in this type. (Extraneous whitespace characters are
not permitted.)
Parameters:
name - the name of the enum constant to be returned.