ex1 05

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• Type: sml
• Size: 271 B

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Functional Programming
└── Lab ML
    └── 0​314
        └── ex1 05.sml

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(*
Write a function that takes a list of characters and returns true if the first element is a vowel
*)

fun vowel(#"a"::ys) = true
    | vowel(#"e"::ys) = true
    | vowel(#"i"::ys) = true
    | vowel(#"o"::ys) = true
    | vowel(#"u"::ys) = true
    | vowel(_) = false;