If Statement

Simple If Statement

if a > 0 {
    print("a > 0")
}

If Else Statement

if a > 0 {
    print("a > 0")
}
else {
    print("a <= 0")
}

If Else Statement

if a > 0 {
    print("a > 0")
}
else if b != 0 {
    print("a <= 0 and b != 0")
}
else {
    print("a <= 0 and b == 0")
}

If Let Statement

if let Some(a) = a {
    print(a)
}

If Let Else Statement

if let Some(a) = a {
    print(a)
}
else {
    print("a is None")
}