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Update pattern-matching.md #202

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May 9, 2024
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Update pattern-matching.md #202

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Update pattern-matching.md
jkroso May 8, 2024
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Update docs/src/pattern-matching.md
jkroso May 8, 2024
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Update pattern-matching.md with example
jkroso May 9, 2024
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6 changes: 6 additions & 0 deletions docs/src/pattern-matching.md
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Expand Up @@ -91,6 +91,12 @@ Another common use case is to catch symbol literals, e.g.

which will match e.g. `struct Foo ...` but not `struct Foo{V} ...`

If you want to match quoted symbols and happen to know that Julia's parser parses
them as `QuoteNode` then you might try `@capture(ex, s_QuoteNode)` and discover that
it never matches. This is because expressions are normalized before being matched
against the pattern. And `QuoteNode` get normalized to `quote` so to match a quoted
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symbol you will need `@capture(ex, s_quote) && s.args[1] isa Symbol`

### Unions

`@capture` can also try to match the expression against one pattern or another,
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