Basic types / Zero values / Essential Go
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package main
import "fmt"
func main() {
fmt.Println("zero values for basic types:")
var zeroBool bool
fmt.Printf("bool: %v\n", zeroBool)
var zeroInt int
fmt.Printf("int: %v\n", zeroInt)
var zeroF32 float32
fmt.Printf("float32: %v\n", zeroF32)
var zeroF64 float64
fmt.Printf("float64: %v\n", zeroF64)
var zeroStr string
fmt.Printf("string: %#v\n", zeroStr)
var zeroPtr *int
fmt.Printf("pointer: %v\n", zeroPtr)
var zeroSlice []uint32
fmt.Printf("slice: %v\n", zeroSlice)
var zeroMap map[string]int
fmt.Printf("map: %#v\n", zeroMap)
var zeroInterface interface{}
fmt.Printf("interface: %v\n", zeroInterface)
var zeroChan chan bool
fmt.Printf("channel: %v\n", zeroChan)
var zeroArray [5]int
fmt.Printf("array: %v\n", zeroArray)
type struc struct {
a int
b string
}
var zeroStruct struc
fmt.Printf("struct: %#v\n", zeroStruct)
var zeroFunc func(bool)
fmt.Printf("function: %v\n", zeroFunc)
}
Go
INFO