Underscore (_) in Scala has multiple uses like wildcard pattern, ignored variable, and anonymous function.
It is used for wildcard pattern to match any value, as an ignored variable when value is not needed, and in lambda expressions as a placeholder. [ more ]
Pattern matching is a powerful feature in Scala for value comparisons and deconstructing values.
Scala uses match expressions for pattern matching, allowing for checking values against various patterns like constants, constructors, and more. [ more ]
Underscore (_) in Scala has multiple uses like wildcard pattern, ignored variable, and anonymous function.
It is used for wildcard pattern to match any value, as an ignored variable when value is not needed, and in lambda expressions as a placeholder. [ more ]
Pattern matching is a powerful feature in Scala for value comparisons and deconstructing values.
Scala uses match expressions for pattern matching, allowing for checking values against various patterns like constants, constructors, and more. [ more ]
Humans are pattern-matching machines, creating narratives and models to predict and act upon the world, leading to both great and potentially misleading outcomes. [ more ]
Java Enhances Pattern Matching with Primitive Type Support in JEP 455
JEP 455 proposes enhancing pattern matching in Java by allowing primitive type patterns in all contexts and extending instanceof and switch to work with all primitive types.
The proposal simplifies code by allowing developers to directly test and convert between different primitive types without verbose syntax. It improves code readability and reduces errors related to lossy conversions.
The enhancement also addresses limitations related to record patterns and their interaction with primitive types, providing better support and potential simplification of code. [ more ]