Golang : Aligning strings to right, left and center with fill example



Tags : golang align fill repeat-spaces string

Problem: You are so used to Python way of aligning text strings such as ljust(), rjust() and center() and Golang's text/tabwriter is not what you are looking for. So how to align text strings in Golang? Solution: Write your own functions with help from strings.Repeat() function. For example: package main import ( "fmt" "strings" ) func rightjust(s string, n int, fill string) string { return strings.Repeat(fill, n) + s func leftjust(s string, n int, fill string) string { return s + strings.Repeat(fill, n) func center(s string, n int, fill string) string { div := n / 2 return strings.Repeat(fill, div) + s + strings.Repeat(fill, div) func main() { str := "Hello World!" fmt.Println("Original : ", str) fmt.Println("Adjust 20 spaces right : [" + rightjust(str, 20, " ") + "]") fmt.Println("Adjust 20 spaces left : [" + leftjust(str, 20, " ") + "]") fmt.Println("Center 10 spaces : [" + center(str, 20, " ") + "]") fmt.Println("Center * fill : [" + center(str, 10, "*") + "]") References: https://golang.org/pkg/text/tabwriter/ https://golang.org/pkg/strings/#Repeat

  See also : Golang : concatenate(combine) strings



Tags : golang align fill repeat-spaces string

By Adam Ng

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