github.com/primecitizens/pcz/std@v0.2.1/text/unicode/digit.go (about)

     1  // SPDX-License-Identifier: Apache-2.0
     2  // Copyright 2023 The Prime Citizens
     3  //
     4  // Copyright 2009 The Go Authors. All rights reserved.
     5  // Use of this source code is governed by a BSD-style
     6  // license that can be found in the LICENSE file.
     7  
     8  package unicode
     9  
    10  // IsDigit reports whether the rune is a decimal digit.
    11  func IsDigit(r rune) bool {
    12  	if r <= MaxLatin1 {
    13  		return '0' <= r && r <= '9'
    14  	}
    15  	return isExcludingLatin(Digit, r)
    16  }