common.go

package main

import (
	"reflect"
)

func isNil(i interface{}) bool {
	if i == nil {
		return true
	}
	switch reflect.TypeOf(i).Kind() {
	case reflect.Ptr, reflect.Map, reflect.Array, reflect.Chan, reflect.Slice:
		return reflect.ValueOf(i).IsNil()
	}
	return false
}

func contains_in_slice(s []string, e string) bool {
	for _, a := range s {
		if a == e {
			return true
		}
	}
	return false
}