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LetterQ

LetterQ[string]
yields True if all the characters in the string are letters, and yields False otherwise.
  • LetterQ[string] by default gives False if string contains any space or punctuation characters.
  • LetterQ handles both ordinary and special characters.
  • In general, LetterQ treats as letters all characters that appear as ordinary text in any language.
  • LetterQ treats as letters such special characters as , , and æ.
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