untyped_numeric_consts_flexibility.go

package main

import "fmt"

func main() {
    
	// We can assign an untyped constant to any numeric-type variable
    
	// Numeric types:
	var (
	    numComplex64 complex64
	    numComplex128 complex128
	    numFloat32 float32
	    numFloat64 float64
	    numInt8 int8
	    numInt16 int16
	    numInt32 int32
	    numInt64 int64
	    numUint8 uint8
	    numUint16 uint16
	    numUint32 uint32
	    numUint64 uint64
	    numByte byte // a type from uint8
	    numRune rune // a type from int32
	)
	
	// Untyped numeric constant
	const untypedConstant = 1
	
	// Let's set untypedConstant to variables with different numeric types
	numComplex64 = untypedConstant
	numComplex128 = untypedConstant
	numFloat32 = untypedConstant
	numFloat64 = untypedConstant
	numInt8 = untypedConstant
	numInt16 = untypedConstant
	numInt32 = untypedConstant
	numInt64 = untypedConstant
	numUint8 = untypedConstant
	numUint16 = untypedConstant
	numUint32 = untypedConstant
	numUint64 = untypedConstant
	numByte = untypedConstant
	numRune = untypedConstant
	
	// Let's see what they contain
	fmt.Println(numComplex64, numComplex128, numFloat32, numFloat64, 
	    numInt8, numInt16, numInt32, numInt64,
	    numUint8, numUint16, numUint32, numUint64,
	    numByte, numRune)

}