Modules
In Sidef, a module is the declaration of a new namespace:
module Fibonacci {
func nth(n) {
n > 1 ? nth(n-2)+nth(n-1) : n
}
}
say Fibonacci::nth(12) # prints: 144
The default namespace name is main. Variables from other namespaces can be used inside a module by either importing them, or by specifying their full name which includes the namespace:
var foo = 42
module Bar {
var baz = 99
say main::foo #=> 42
}
say Bar::baz #=> 99
Importing an identifier in the current namespace, can be done using the syntax import namespace::identifier_name:
var foo = 42
module Bar {
import main::foo
var baz = 2*foo
}
import Bar::baz
say baz #=> 84
Modules cannot be instantiated as objects, cannot be modified, and cannot be directly referred to by their name (like ModuleName) without a member name (like ModuleName::var_name). Therefore, they are for containing related code that doesn't need to be instantiated like a class.
Last modified 2yr ago
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