Manual：Operators：Prefix And Postfix Operators On Matchers：~

>>> from lepl import *
>>> (Literal('a')).parse('abc')
['a']
>>> (~Literal('a')).parse('abc')
[]
>>> (Literal('a') & ~Literal('b') & Literal('c')).parse('abc')
['a', 'c']
>>> (Literal('a') & Drop(Literal('b')) & Literal('c')).parse('abc')
['a', 'c']