Hands-On High Performance with Go

String slice functions

Being able to manipulate slices of strings is helpful, as we have seen in previous chapters. The Sprig library helps us perform some string slice manipulation actions. In our example, we'll split a string based on the . character.

First, we import the necessary libraries:

package main        import (    "fmt"    "os"    "text/template"            "github.com/Masterminds/sprig")         func main() {

Next, we split our templated string using the . delimiter:

    tpl := `{{$v := "Hands.On.High.Performance.In.Go" | splitn "." 5}}{{$v._3}}`            functionMap := sprig.TxtFuncMap()    t := template.Must(template.New("String      Split").Funcs(functionMap).Parse(tpl))            fmt.Print("String Split into Dict (word 3): ")    err := t.Execute(os.Stdout, tpl)    if err != nil { fmt.Printf("Couldn't ...