rl_lang/docs/entries/concepts/match/
mod.rs

1use crate::docs::entry::{ConceptCategory, ConceptEntry, DescriptionEntry, DescriptionKind};
2
3pub static MATCH: ConceptEntry = ConceptEntry {
4    name: "match",
5    summary: "branch on a value against literal patterns, with `_` as a catch-all",
6    descriptions: &[
7        DescriptionEntry {
8            kind: DescriptionKind::Syntax,
9            title: None,
10            description: "`match <value> { <pattern> => { <block> } ... }` runs the block whose pattern matches the value",
11            examples: &[
12                "match x {\n    1 => { println(\"one\") }\n    2 => { println(\"two\") }\n    _ => { println(\"other\") }\n}",
13            ],
14            expected_output: &[],
15        },
16        DescriptionEntry {
17            kind: DescriptionKind::Explanation,
18            title: Some("wildcard arm"),
19            description: "`_` matches anything not caught by an earlier arm; without it, a value that matches no arm falls through silently",
20            examples: &[
21                "dec int x = 5\n\nmatch x {\n    1 => { println(\"one\") }\n    _ => { println(\"something else\") }\n}",
22            ],
23            expected_output: &[],
24        },
25        DescriptionEntry {
26            kind: DescriptionKind::Pitfall,
27            title: None,
28            description: "each arm only matches a single literal value; there's no OR-pattern (`1 | 2 =>`) or variable binding yet, so ranges or destructuring need `if`/`elif` instead",
29            examples: &[],
30            expected_output: &[],
31        },
32    ],
33    category: ConceptCategory::ControlFlow,
34    prerequisites: &["control flow"],
35    pitfalls: &["arms only support literals and `_`, no OR-patterns or bindings"],
36    related: &["control flow"],
37    related_stdlib: &[],
38    since: None,
39};
rl_lang/docs/entries/concepts/match/mod.rs

rl_lang/docs/entries/concepts/match/
mod.rs
