README
¶
Constants
Constants are a way to create a named identifier whose value can never change. They also provide an incredible amount of flexibility to the language. The way constants are implemented in Go is very unique.
Notes
- Constants are not variables.
- They existing only at compilation.
- Untyped constants can be implictly converted where typed constants and variables can't.
- Think of untyped constants as having a Kind, not a Type.
Links
https://golang.org/ref/spec#Constants
http://blog.golang.org/constants
http://www.goinggo.net/2014/04/introduction-to-numeric-constants-in-go.html
Code Review
Declare and inialize constants (Go Playground)
Parallel type system (Kind) (Go Playground)
iota (Go Playground)
Exercises
Exercise 1
Part A: Declare an untyped and typed constant and display their values.
Part B: Multiply two literal constants into a typed variable and display the value.
Template (Go Playground) | Answer (Go Playground)
All material is licensed under the Apache License Version 2.0, January 2004.
Directories
¶
| Path | Synopsis |
|---|---|
|
Sample program to show how to declare constants and their implementation in Go.
|
Sample program to show how to declare constants and their implementation in Go. |
|
Sample program to show how constants do have a parallel type system.
|
Sample program to show how constants do have a parallel type system. |
|
Sample program to show how iota works.
|
Sample program to show how iota works. |
|
exercises
|
|
|
exercise1
Declare an untyped and typed constant and display their values.
|
Declare an untyped and typed constant and display their values. |
|
template1
Declare an untyped and typed constant and display their values.
|
Declare an untyped and typed constant and display their values. |
Click to show internal directories.
Click to hide internal directories.