4. Go Constants

Source: Internet
Author: User

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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: = ten    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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