Keywords

To emphasize how simple Go is, here is a breakdown of all its 25 keywords. You probably already know most of them if you are familiar with other programming languages. The keywords are grouped together to examine them according to their use.

Data types:

var	This defines a new variable
const	This defines a constant value that does not change
type	This defines a new data type
struct	This defines a new structured data type that contains multiple variables
map	This defines a new map or hash variable
interface	This defines a new interface

 

Functions:

func	This defines a new function
return	This exits a function, optionally returning values

 

Packages:

import	This imports an external package in the current package
package	This specifies what package a file belongs to

 

Program flow:

if	This is used for branch execution based on a condition that is true
else	This is used for a branch if a condition is not true
goto	This is used to jump directly to a label; it is rarely used and not encouraged

 

Switch statements:

switch...