go by example

https://gobyexample.com/

Golang: format a string without printing?

return fmt.Sprintf("at %v, %s", e.When, e.What)

Golang: format a string without printing?

How to find a type of a object in Golang?

package main

import (
    "fmt"
    "reflect"
)

func main() {

    tst := "string"
    tst2 := 10
    tst3 := 1.2

    fmt.Println(reflect.TypeOf(tst))
    fmt.Println(reflect.TypeOf(tst2))
    fmt.Println(reflect.TypeOf(tst3))

}

// 或者
func typeof(v interface{}) string {
    return fmt.Sprintf("%T", v)
}

// 或者
func typeof(v interface{}) string {
    return reflect.TypeOf(v).String()
}

// 或者
func typeof(v interface{}) string {
    switch t := v.(type) {
    case int:
        return "int"
    case float64:
        return "float64"
    //... etc
    default:
        _ = t
        return "unknown"
    }
}

How to find a type of a object in Golang?