Conditional Statements

NBCL has two types of conditional statements. The if/else if/else statement for general conditions, and the match statement for comparing a value against specific patterns.

If/else if/else

if evaluates a condition and runs the first block that matches:

local x = 10

if x > 10 {
    print("x is greater than 10")
} else if x == 10 {
    print("x is exactly 10")
} else {
    print("x is less than 10")
}

else if and else are both optional. You can have as many else if branches as you need.

Match

local x = "Foo"

match x {
    "Foo" => print("x is 'Foo'")
    "Bar" => print("x is 'Bar'")
    "Baz" => print("x is 'Baz'")
}

To catch any value not matched above, use _ as a wildcard or an identifier to capture the value:

nbl

local x = "Baz"

match x {
    "Foo" => print("x is 'Foo'")
    # 'other' holds the unmatched value
    other => print("Unknown: " + other) 
}

output

"Unknown: Baz"

Wildcard (_) example:

nbl

local x = "Baz"

match x {
    "Foo" => print("x is 'Foo'")
    _ => print("x didn't match any of the pattern") 
}

output

"x didn't match any of the pattern"