#####   ######  #####    ###    #   #  ###  #   #  ######
##  ##  ##      ##  ##  ## ##   #   #   #   #   #  ##
#####   ####    #####   #   #   #   #   #   #   #  ####
##  #   ##      ##      ## ##    # #    #    # #   ##
##   #  ######  ##       ###      #    ###    #    ######

$ curl repovive.com/roadmaps/go/strings/string-length

░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░░█████████████████████████████████████████████████████

#####   ######  #####    ###    #   #  ###  #   #  ######
##  ##  ##      ##  ##  ## ##   #   #   #   #   #  ##
#####   ####    #####   #   #   #   #   #   #   #  ####
##  #   ##      ##      ## ##    # #    #    # #   ##
##   #  ######  ##       ###      #    ###    #    ######

$ curl repovive.com/roadmaps/go/strings/string-length

Repovive

String Length - Strings | Go | Repovive

Repovive.

Go10 sections · 431 units20h total

Open in Course

String Length

Counting bytes vs characters

The len() function returns the number of bytes in a string, not characters:

s := "Hello"
fmt.Println(len(s))  // 5

s = "日本語"
fmt.Println(len(s))  // 9 (3 chars × 3 bytes each)

ASCII characters use $1$ byte each. Many other characters use $2$ to $4$ bytes. When working with international text, remember that len() counts bytes.