4. Go Constants

Source: Internet
Author: User



Constants are values that cannot be changed.



How constants are defined in the Go language: const A = "admin"



A is a constant, but in fact the "admin" behind it is also a string constant.



The value of constant a cannot be changed at this time, and if you continue to assign a value, go will error: cannot assign to a



Also, the value of a constant must be determined at compile time and cannot be computed at the time the program runs. For example:


package main 

import (
	"fmt"
)

func main() {
    a := 10
    const b = a * 3

    fmt.Println("b =", b);
}


Go will error: const initializer A * 3 is not a constant






4. Go Constants


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