Scope

In Go, scopes tend to begin and end along the lines of curly braces {}

package main
import {
	"fmt"
	"math/rand"
}
func main() {
	var count = 0
	for count < 10 { // A new scope begins
		var num = rand.Intn(10) + 1
		fmt.Println(num)
		count++
	} // This scope ends
}

Short declaration

var count = 10
count := 10

A condensed countdown: loop.go

var count = 0
for count = 10; count > 0; count-- {
	fmt.Println(count)
}
fmt.Println(count) // count remains in scope

short-loop.go

for count := 10; count > 0; count-- {
	fmt.Println(count)
} // count is no longer in scope

short-if.go

if num := rand.Intn(3); num == 0 {
	fmt.Println("Space Adventures")
} else if num == 1 {
	fmt.Println("SpaceX")
} else {
	fmt.Println("Virgin Galactic")
} // num is no longer in scope

short-switch.go

switch num := rand.Intn(10); num {
case 0:
	fmt.Println("Space Adventures")
case 1:
	fmt.Println("SpaceX")
case 2:
	fmt.Println("Virgin Galactic")
default:
	fmt.Println("Random spaceline #", num)
}

Types

Functions

Methods