Golang unicode.IsSpace() function is “used to check if a given Unicode code point is a whitespace character.”
Syntax
func IsSpace(r rune) bool
Parameters
The IsSpace() function takes a “rune” as an argument. Rune is a superset of ASCII or an alias of int32. It contains all the characters available in the world’s writing system, including accents and other diacritical marks, control codes like tab and carriage return, and assigns each one a standard number.
Return value
The IsSpace() function checks if the rune is a space character as defined by Unicode’s White Space property; in the Latin-1 space, this is: ‘\t’, ‘\n’, ‘\v’, ‘\f’, ‘\r’, ‘ ‘, U+0085 (NEL), U+00A0 (NBSP).
Example
In this code, we will pass a string with white and non-whitespace characters and get the output in which
package main
import (
"fmt"
"unicode"
)
func main() {
str := " \t\n e n "
// Loop over each character in the string and check if it's a whitespace character
for _, r := range str {
if unicode.IsSpace(r) {
fmt.Printf("'%c' is a whitespace character\n", r)
} else {
fmt.Printf("'%c' is not a whitespace character\n", r)
}
}
}
Output
' ' is a whitespace character
' ' is a whitespace character
' ' is a whitespace character
'
' is a whitespace character
' ' is a whitespace character
'e' is not a whitespace character
' ' is a whitespace character
'n' is not a whitespace character
' ' is a whitespace character
' ' is a whitespace character
In this example, the unicode.IsSpace() function checks if each character in the string str is a whitespace character.
The program’s output will suggest which characters are whitespace and which are not.
That’s it!

Krunal Lathiya is a seasoned Computer Science expert with over eight years in the tech industry. He boasts deep knowledge in Data Science and Machine Learning. Versed in Python, JavaScript, PHP, R, and Golang. Skilled in frameworks like Angular and React and platforms such as Node.js. His expertise spans both front-end and back-end development. His proficiency in the Python language stands as a testament to his versatility and commitment to the craft.