Scopes ​

Scopes (aka code blocks or blocks) are indicated by braces, except in exceptional cases. Although a scope is often used to denote an algorithm domain, it is also used for other purposes.

Anonymous Scopes ​

Anonymous scopes are scopes that do not belong to a definition (function, etc.).

For example:

fn main() {
    {
        // Anonymous scope
    }
}

The above example shows an anonymous scope contained within the scope of the main function.

Deferred Scopes ​

Deferred scopes are scopes whose execution is deferred until the scope they are in expires. Declares with the defer keyword.

For example:

fn main() {
    defer {
        println("Hello Defer")
    }
    println("Hello World")
}

In the example above, the output Hello World appears before. This is because the deferred scope is defined in the scope of the function and its execution is deferred until the scope of the function exits.

Unsafe Scopes ​

Unsafe scopes allows to use Unsafe Jule. Declares with the unsafe keyword.

For example:

fn main() {
    unsafe {
        // Unsafe anonymous scope
    }
}

See more information about Unsafe Jule

Deferred Unsafe Scopes ​

You may want to use Unsafe Jule and deferred scopes at the same time. You can do this.

For example:

fn main() {
    unsafe defer {
        // Deferred unsafe anonymous scope
    }
}