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Fix grammar in ch13-01-closures.md #2534

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Dec 23, 2020
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Fix grammar in ch13-01-closures.md #2534

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6 changes: 3 additions & 3 deletions src/ch13-01-closures.md
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Expand Up @@ -278,7 +278,7 @@ The compiler gives us this error:

The first time we call `example_closure` with the `String` value, the compiler
infers the type of `x` and the return type of the closure to be `String`. Those
types are then locked in to the closure in `example_closure`, and we get a type
types are then locked into the closure in `example_closure`, and we get a type
error if we try to use a different type with the same closure.

### Storing Closures Using Generic Parameters and the `Fn` Traits
Expand Down Expand Up @@ -430,8 +430,8 @@ Run this test with the `Cacher` implementation in Listing 13-9 and Listing
```

The problem is that the first time we called `c.value` with 1, the `Cacher`
instance saved `Some(1)` in `self.value`. Thereafter, no matter what we pass in
to the `value` method, it will always return 1.
instance saved `Some(1)` in `self.value`. Thereafter, no matter what we pass into
the `value` method, it will always return 1.

Try modifying `Cacher` to hold a hash map rather than a single value. The keys
of the hash map will be the `arg` values that are passed in, and the values of
Expand Down