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fix a typo

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pull/231/head
Hu Shuai 4 years ago committed by GitHub
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src/phantom-data.md
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@ -91,12 +91,12 @@ Here’s a table of all the wonderful ways `PhantomData` could be used:
| Phantom type | `'a` | `T` | | Phantom type | `'a` | `T` |
|-----------------------------|-----------|---------------------------| |-----------------------------|-----------|---------------------------|
| `PhantomData<T>` | - | variant (with drop check) | | `PhantomData<T>` | - | covariant (with drop check) |
| `PhantomData<&'a T>` | variant | variant | | `PhantomData<&'a T>` | covariant | covariant |
| `PhantomData<&'a mut T>` | variant | invariant | | `PhantomData<&'a mut T>` | covariant | invariant |
| `PhantomData<*const T>` | - | variant | | `PhantomData<*const T>` | - | covariant |
| `PhantomData<*mut T>` | - | invariant | | `PhantomData<*mut T>` | - | invariant |
| `PhantomData<fn(T)>` | - | contravariant | | `PhantomData<fn(T)>` | - | contravariant |
| `PhantomData<fn() -> T>` | - | variant | | `PhantomData<fn() -> T>` | - | covariant |
| `PhantomData<fn(T) -> T>` | - | invariant | | `PhantomData<fn(T) -> T>` | - | invariant |
| `PhantomData<Cell<&'a ()>>` | invariant | - | | `PhantomData<Cell<&'a ()>>` | invariant | - |

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