gotilty / gotil

package internal

import (

	"fmt"

	"reflect"

)

// IsAssigned checks the given parameter has value also if it's slice or array that checks has element.

// Example:

// 		result := IsAssigned("test data")

// 		// Output: true

func IsAssigned(a interface{}) bool {

	if a == nil {

		return false

	}

	val := reflect.ValueOf(a)

	switch val.Kind() {

	case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:

		return (val.Int()) != 0

	case reflect.Float32, reflect.Float64:

		return (val.Float()) != 0.0

	case reflect.String:

		return (fmt.Sprintf("%s", a)) != ""

	case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:

		return (val.Uint()) != 0

	case reflect.Bool:

		return (val.Bool())

	case reflect.Chan, reflect.Func, reflect.Struct, reflect.UnsafePointer:

		tt := reflect.Zero(val.Type())

		return !reflect.DeepEqual(val, tt)

	case reflect.Array, reflect.Slice:

		return val.Len() > 0

	default:

		return false