cangjie-const

To declare a const variable in Cangjie, use the const keyword followed by the variable name and a compile-time evaluated initializer. Const variables require deep immutability and must be initialized with constant expressions rather than runtime values.

The difference between const and let or var in Cangjie is that const enforces compile-time evaluation and deep immutability, whereas let defines an immutable reference evaluated at runtime and var allows runtime mutability.

Const functions in Cangjie work by enabling compile-time evaluation when their parameters and internal operations consist solely of constant expressions. They can also execute at runtime if called with non-constant arguments.

Cangjie const contexts allow numerical types, Bool, Unit, Rune, String, Arrays, Tuples, and enums. Expressions within const contexts must be fully evaluable at compile time using these supported constant types.

Yes, you can define compile-time struct or class instances using const init in Cangjie. Const init constructors enable compile-time instance creation, provided the constructor logic adheres to constant expression rules.

Cangjie const supports interface implementation and generic constraints within const contexts. This allows types to enforce compile-time constant behavior while adhering to specified interface contracts and generic type limitations.