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StringTools[HasLower] - determine if a string has any lower case characters
StringTools[HasUpper] - determine if a string has any upper case characters
StringTools[HasAlpha] - determine if a string has any alphabetic characters
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Calling Sequence
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HasLower(s)
HasUpper(s)
HasAlpha(s)
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Parameters
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s
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string; string to test
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Description
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The HasLower(s) command determines whether s has a lowercase letter. A character is lowercase if it is one of the following:
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a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t, u, v, w, x, y, z.
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If s has at least one lowercase letter, then HasLower returns true. Otherwise, false is returned.
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The HasUpper(s) command determines whether s has an uppercase letter. A character is uppercase if it is one of the following:
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A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T, U, V, W, X, Y, Z.
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If s has at least one uppercase letter, then HasUpper returns true. Otherwise, false is returned.
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The HasAlpha(s) command determines whether s has an alphabetic character. A character is alphabetic if it is either upper or lowercase.
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If s has at least one alphabetic character, HasAlpha returns true. Otherwise, false is returned.
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Thread Safety
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The StringTools[HasLower], StringTools[HasUpper] and StringTools[HasAlpha] commands are thread-safe as of Maple 15.
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Examples
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![s := convert([`$`(1 .. 255)], 'bytes')](/support/helpjp/helpview.aspx?si=4818/file03010/math136.png)
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See Also
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convert, length, string, StringTools, StringTools[HasAlphaNumeric], StringTools[IsAlpha], StringTools[IsLower], StringTools[IsUpper], StringTools[LowerCase], StringTools[Select], StringTools[UpperCase]
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