Conditional statements

Conditional statements are used to execute a block of code if a condition is true or false.

If

You can use the if keyword to execute a block of code, if a condition is true:

var foo : int = 1
if foo == 1 {
    print("foo is 1")
}

Else

You can use the else keyword to execute a block of code, if a condition is false:

var foo : int = 1
if foo == 1 {
    print("foo is 1")
} else {
    print("foo is not 1")
}

Else if

You can use the else if statement to execute a block of code, if else if a condition is true:

var foo : int = 1
if foo == 1 {
    print("foo is 1")
} else if foo == 2 {
    print("foo is 2")
} else {
    print("foo is not 1 or 2")
}

and and or and not

You can use the and keyword to execute a block of code, if all conditions are true:

var foo : int = 1
var bar : int = 2
if foo == 1 and bar == 2 {
    print("foo is 1 and bar is 2")
}

You can use the or keyword to execute a block of code, if at least one condition is true:

var foo : int = 1
var bar : int = 2
if foo == 1 or bar == 2 {
    print("foo is 1 or bar is 2")
}

You can use the not keyword to execute a block of code, if a condition is false:

var foo : int = 1
if not foo == 1 {
    print("foo is not 1")
}

Conditional Operators