How does pattern matching work in functional programming languages?

... patterns to constrain them to match only values of a certain type. The second kind of pattern is used for full pattern matching, where the values you're ... rexCompile("\\([az]+\\)\\.\\1") => t rexExecute("abc.bc") => t rexExecute("abc.ab") => nil It is not clear why the second case is nil. Mar 13, 2025 ... The match() method of String values retrieves the result of matching this string against a regular expression. Feb 11, 2015 ... Pattern matching is a feature common in modern functional languages that allows a structure similar to switch but on the type of the argument. Jan 27, 2022 ... In dotall mode, the expression . matches any character, including a line terminator. By default this expression does not match line terminators. Jul 12, 2023 ... Pattern matching is the process of determining whether or not the striated toolmarks on two objects, such as fired bullets, correspond. This is ... Scala's pattern matching statement is most useful for matching on algebraic types expressed via case classes. Scala also allows the definition of patterns ... Pattern matching is a feature allowing deep matching of structured values: checking the structure and binding the matched parts to local variables. Apr 23, 2017 ... I was confused about pattern matching for quite a while. Every time someone spoke of it, they said how it was one of their favorite features ... May 13, 2024 ... I was writing string.IsNullOrEmpty it got me thinking whether I could switch from this very specific method to using (maybe) a more general pattern matching ...