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awalterschulze/medium-derivative-of-a-regex-derive-answer-5.hs Secret

Created August 31, 2022 09:07
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medium-derivative-of-a-regex-derive-answer-5.hs
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medium-derivative-of-a-regex-derive-answer-5.hs
derive "∅*b" 'b'
= derive "∅*" 'b' `concat` "b"
`or`
derive "b" 'b'
= derive "∅" 'b' `concat` "∅*" `concat` "b"
`or`
derive "b" 'b'
= "∅" `concat` "∅*" `concat` "b"
`or`
"ε"
= "∅∅*b|ε"
= "ε"
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