How to determine whether a string is a number in golang

Golang's method to determine whether it is a number:

IsNumber determines whether r is a numeric character (category N)

func IsNumber(r rune) bool
func main() {
s := "Hello 123１２３！"
for _, r := range s {
fmt.Printf("%c = %v\n", r, unicode.IsNumber(r))
} // 123１２３ = true
}

IsDigit determines r Whether it is a decimal numeric character

func IsDigit(r rune) bool
func main() {
s := "Hello 123１２３！"
for _, r := range s {
fmt.Printf("%c = %v\n", r, unicode.IsDigit(r))
} // 123１２３ = true
}

For more golang knowledge, please pay attention to the golang tutorial column.

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