func unicode.IsLetter

7 uses

	unicode (current package)
		graphic.go#L90: func IsLetter(r rune) bool {

	bytes
		bytes.go#L765: 	if unicode.IsLetter(r) || unicode.IsDigit(r) {

	encoding/json
		encode.go#L925: 		case !unicode.IsLetter(c) && !unicode.IsDigit(c):

	net/http
		pattern.go#L192: 		if !unicode.IsLetter(c) && c != '_' && (i == 0 || !unicode.IsDigit(c)) {

	reflect
		type.go#L2274: 	return 'a' <= ch && ch <= 'z' || 'A' <= ch && ch <= 'Z' || ch == '_' || ch >= utf8.RuneSelf && unicode.IsLetter(ch)

	regexp
		regexp.go#L987: 		if !unicode.IsLetter(rune) && !unicode.IsDigit(rune) && rune != '_' {

	strings
		strings.go#L802: 	if unicode.IsLetter(r) || unicode.IsDigit(r) {

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