19 lines
303 B
Go
19 lines
303 B
Go
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package rfc2234
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// IsAlpha returns true if the value of 'r' matches 'ALPHA' as defined in IETF RFC-2234:
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//
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// ALPHA = %x41-5A / %x61-7A ; A-Z / a-z
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func IsAlpha(r rune) bool {
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if 'z' < r {
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return false
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}
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if r < 'A' {
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return false
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}
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if 'Z' < r && r < 'a'{
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return false
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}
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return true
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}
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