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20 lines
529 B
20 lines
529 B
3 years ago
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// Package ascii provides data and functions to test some properties of
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// ASCII code points.
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package ascii
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// IsDigit reports whether the rune is a decimal digit.
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func IsDigit(r rune) bool {
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return r >= '0' && r <= '9'
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}
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// IsLatinLetter reports whether the rune is ASCII latin letter.
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func IsLatinLetter(r rune) bool {
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return (r >= 'a' && r <= 'z') || (r >= 'A' && r <= 'Z')
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}
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// IsLatinLower reports whether the rune is lower ASCII latin letter.
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func IsLatinLower(r rune) bool {
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r |= 0x20
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return 'a' <= r && r <= 'z'
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}
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