iszero

README

iszero

A go package for checking if a value is zero.

I put this package together from code within the Go source, because I needed to be able to identify if a field in a struct was empty/its-zero-value, so that when encoding a struct I could determine if the field was empty and could be ommitted.

Usage

See the example in Go Docs.

Documentation

Index

• func Value(v reflect.Value) bool

Examples

• Value

Functions

func Value

func Value(v reflect.Value) bool

Value determines of the value is a zero value, which is the value the type has if declared without a defined value.

Example

package main

import (
	"fmt"
	"reflect"

	"4d63.com/iszero"
)

func main() {
	var s0 string
	s0Zero := iszero.Value(reflect.ValueOf(s0))

	var s1 string = "hello world"
	s1Zero := iszero.Value(reflect.ValueOf(s1))

	fmt.Println("s0", s0Zero)
	fmt.Println("s1", s1Zero)

}

Output:

s0 true
s1 false