Namespaces

As your code grows, you might run into naming conflicts (e.g., two functions named init). Namespaces allow you to group related variables and functions under a unique name.

Defining a Namespace

Use the namespace keyword followed by a name and a block of code.

namespace Math {
    var PI = 3.14159
    
    func square(x) {
        return x * x
    }
    
    func circle_area(r) {
        // Accessing siblings: explicit access is recommended
        return Math.PI * Math.square(r)
    }
}

Accessing Members

You can access the contents of a namespace using the dot . notation, just like an object or a dictionary.

print Math.PI // 3.14159

var area = Math.circle_area(10)
print area // 314.159

Namespaces are Objects

Under the hood in Aegis v0.2, a Namespace is compiled as a Dictionary containing the local variables defined in its scope.

This means Namespaces are First-Class Citizens:

• They can be assigned to variables.
• They can be passed as arguments.
• They can be returned from a script (see Imports).

var M = Math
print M.square(5) // 25