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Merge pull request #757 from subsetpark/document-match

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Add documentation of @ pattern in match
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Calvin Rose 2021-08-08 12:51:00 -05:00 committed by GitHub
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@ -1666,6 +1666,10 @@
* `_` symbol -- the last special case is the `_` symbol, which is a wildcard
that will match any value without creating a binding.
While a symbol pattern will ordinarily match any value, the pattern `(@ <sym>)`,
where <sym> is any symbol, will attempt to match `x` against a value
already bound to `<sym>`, rather than matching and rebinding it.
Any other value pattern will only match if it is equal to `x`.
```
[x & cases]