Imports
import (
"fmt"
"math"
)
Or
import "fmt"
import "math"
Exported names
In Go, a name is exported if it begins with a capital letter. For example, Pizza is an exported name, as is Pi, which is exported from the math package.
Functions
A function can take zero or more arguments.
In this example, add takes two parameters of type int.
Notice that the type comes after the variable name.
package main
import "fmt"
func add(x int, y int) int {
return x + y
}
func main() {
fmt.Println(add(42, 13))
}
Parameter Types
The Omission of Defining Parameter Types
When two or more consecutive named function parameters share a type, you can omit the type from all but the last.
In this example, we shortened
x int, y int
to
x, y int
package main
import "fmt"
func add(x, y int) int {
return x + y
}
func main() {
fmt.Println(add(42, 13))
}