Pattern matching defines variables within the scope of the matched block.
When using pattern matching, the variable defined is scoped within the block where the pattern matches. This ensures that the variable cannot be accessed outside its intended scope, minimizing the risk of accidental misuse. For instance, if you match a 'Product' object in an inventory system, the 'Product' variable is only accessible within the block where the match is confirmed, maintaining a cleaner and safer code structure.
Additional Notes
How does scoped variable definition work in pattern matching?