cangjie-pattern-match

Pattern matching with enums in Cangjie uses match expressions to destructure data and handle specific enum cases exhaustively. You define constant, wildcard, or binding patterns to execute conditional logic based on the matched enum variant.

if-let and while-let in Cangjie provide conditional matching for single patterns. if-let executes a block once if a pattern matches, whereas while-let continuously loops and destructures as long as the pattern condition remains satisfied.

Pattern guards in Cangjie use the where clause to add boolean conditions to match arms. They refine pattern matching by evaluating additional expressions, ensuring the arm executes only if both the data pattern and the guard condition evaluate to true.

Tuple patterns in Cangjie should be used to destructure multiple values simultaneously within a match expression. They allow you to match and bind specific elements of a tuple data structure directly, simplifying conditional logic for grouped variables.

Yes, Cangjie match expressions must be exhaustive, meaning every possible value must be handled. You achieve pattern exhaustiveness by covering all enum variants or including a wildcard pattern to catch any remaining unmatched cases.

Yes, Cangjie allows pattern matching in variable definitions to destructure data directly during assignment. By using binding or tuple patterns, you can extract and bind internal components of complex data structures into distinct variables upon declaration.