A Tour of Go Numeric Constants

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Numeric constants are high-precision values.

An untyped constant takes the type needed by its context.

Try printing needInt(Big) too.

 

package main import "fmt"const (    Big = 1 << 100    Small = Big >> 99)func needInt(x int) int {    return x*10 + 1}func needFloat(x float64) float64{    return x * 0.1}func main() {    fmt.Println(needInt(Small))    fmt.Println(needFloat(Small))    fmt.Println(needFloat(Big))}

 

A Tour of Go Numeric Constants