Revision as of 00:13, 27 December 2024 edit 37.222.131.5 (talk) Add Java to list of programming langues that support pattern matching ← Previous edit		Revision as of 21:30, 6 January 2025 edit undo HeyElliott (talk \| contribs) Extended confirmed users 121,470 edits WP:N'T Tag: 2017 wikitext editor Next edit →
Line 40: ==Tree patterns== More complex patterns can be built from the primitive ones of the previous section, usually in the same way as values are built by combining other values. The difference then is that with variable and wildcard parts, a pattern ~~doesn't~~does not build into a single value, but matches a group of values that are the combination of the concrete elements and the elements that are allowed to vary within the structure of the pattern. A tree pattern describes a part of a tree by starting with a node and specifying some branches and nodes and leaving some unspecified with a variable or wildcard pattern. It may help to think of the [[abstract syntax tree]] of a programming language and [[algebraic data type]]s.

Pattern matching: Difference between revisions