/* The Tengo Language */ fmt := import("fmt") each := func(seq, fn) { for x in seq { fn(x) } } sum := func(init, seq) { each(seq, func(x) { init += x }) return init } fmt.println(sum(0, [1, 2, 3])) // "6" fmt.println(sum("", [1, 2, 3])) // "123"

package main import ( "context" "fmt" "github.com/d5/tengo/v2" ) func main() { // create a new Script instance script := tengo.NewScript([]byte( `each := func(seq, fn) {  for x in seq { fn(x) } }  sum := 0 mul := 1 each([a, b, c, d], func(x) {  sum += x  mul *= x })`)) // set values _ = script.Add("a", 1) _ = script.Add("b", 9) _ = script.Add("c", 8) _ = script.Add("d", 4) // run the script compiled, err := script.RunContext(context.Background()) if err != nil { panic(err)	} // retrieve values sum := compiled.Get("sum") mul := compiled.Get("mul") fmt.Println(sum, mul) // "22 288" }

res, err := tengo.Eval(ctx, `input ? "success" : "fail"`, map[string]interface{}{"input": 1}) if err != nil { panic(err) } fmt.Println(res) // "success"