determine if a string contains any vowels
string; any Maple string
The HasVowel(s) command tests whether any character in its argument s is an English language vowel.
The vowels are, by definition, the ten characters a, e, i, o, u, A, E, I, O and U. No other character is a vowel. In particular, the characters y and Y are not considered to be vowels for this test.
If any character of the string s is a vowel character, then the value true is returned. Otherwise, the value false is returned.
All of the StringTools package commands treat strings as (null-terminated) sequences of 8-bit (ASCII) characters. Thus, there is no support for multibyte character encodings, such as unicode encodings.
The StringTools[HasVowel] command is thread-safe as of Maple 15.
For more information on thread safety, see index/threadsafe.
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