F#中的函数'startsWithVowel'

// Function that checks if a string starts with a vowel or not
let startsWithVowel (input: string) : bool =
    let vowels = "aeiou"
    input.StartsWith(vowels) || input.StartsWith(vowels.ToLower())

// This function takes a string input and returns a boolean value indicating whether
// the string starts with a vowel or not. It uses the string.StartsWith method to check
// if the input string starts with the given vowels string or its lower case version.

// This function can be used to check if a string starts with a vowel in various programming
// contexts, such as data validation, user input validation, or filtering.

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