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remove mention of the im crate

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Niko Matsakis 2019-09-24 06:51:17 -04:00
parent 8b2219c1e1
commit 25b54aa0b3
1 changed files with 1 additions and 2 deletions
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3
book/src/common_patterns/selection.md
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@ -74,6 +74,5 @@ and we cloned them quite frequently. This will work just fine in Salsa,
but it may not be the most efficient choice. This is because each clone
is going to produce a deep copy of the result. As a simple fix, you
might convert your data structures to use `Arc` (e.g., `Arc<Vec<ParsedHeader>>`),
which makes cloning cheap. Or you might prefer to adopt persistent data
structures such as those found in [the `im` crate](https://crates.io/crates/im).
which makes cloning cheap.