Combining strings

The Go standard library offers multiple ways to build strings from components. The best way depends on what type of strings you are dealing with, and how long they are. This section shows several ways that strings can be built.

How to do it...

• To combine a few fixed numbers of strings, or to add runes to another string, use the + or += operators or string.Builder
• To build a string algorithmically, use strings.Builder
• To combine a slice of strings, use strings.Join
• To combine parts of URL paths, use path.Join
• To build filesystem paths from path segments, use filepath.Join

How it works...

To build constant values, or for simple concatenations, use the + or += operators:

var TwoLines = "This is the first line \n"+
"This is the second line"
func ThreeLines(newLine string) string {
   return TwoLines+"\n"+newLine
}

You can add runes to a string the same way:

func AddNewLine(line string...