package main import "github.com/kataras/iris/v12" func main() { app := iris.New() app.Get("/", func(ctx iris.Context) { ctx.Writef("Hello %s", "world") }) // This is an Iris-only feature across all web frameworks // in every programming language for years. // Dynamic Route Path Parameters Functions. // Set min length characters to 2. // Prefix of the username is '@' // Otherwise 404. // // You can also use the regexp(...) function for more advanced expressions. app.Get("/{username:string min(2) prefix(@)}", func(ctx iris.Context) { username := ctx.Params().Get("username")[1:] ctx.Writef("Username is %s", username) }) // http://localhost:8080 -> FOUND (Hello world) // http://localhost:8080/other -> NOT FOUND // http://localhost:8080/@ -> NOT FOUND // http://localhost:8080/@kataras -> FOUND (username is kataras) app.Listen(":8080") }