empty

Documentation

Overview

Package empty provides functions for checking empty/nil variables.

Index

• func IsEmpty(value interface{}) bool
• func IsNil(value interface{}, traceSource ...bool) bool

Functions

func IsEmpty

func IsEmpty(value interface{}) bool

IsEmpty checks whether given `value` empty. It returns true if `value` is in: 0, nil, false, "", len(slice/map/chan) == 0, or else it returns false.

func IsNil

func IsNil(value interface{}, traceSource ...bool) bool

IsNil checks whether given `value` is nil, especially for interface{} type value. Parameter `traceSource` is used for tracing to the source variable if given `value` is type of pinter that also points to a pointer. It returns nil if the source is nil when `traceSource` is true. Note that it might use reflect feature which affects performance a little.