Control Flow
If statements
Parentheses around conditions are optional; braces are required.
score := 82
if score >= 70 {
fmt.Println("passed")
} else {
fmt.Println("retry")
}For loops
Go has one loop keyword. Use it as a C-style loop, a while-style loop, or an infinite loop with break.
for i := 1; i <= 3; i++ {
fmt.Println(i)
}
n := 3
for n > 0 {
fmt.Println(n)
n--
}Range over slices and maps
range yields index and value, or key and value.
colors := []string{"red", "green"}
for i, c := range colors {
fmt.Println(i, c)
}Switch
Cases do not fall through by default.
day := "sat"
switch day {
case "sat", "sun":
fmt.Println("weekend")
default:
fmt.Println("weekday")
}
Comments
One comment per signed-in account. Comments are saved with this page’s URL.