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| -rw-r--r-- | src/doc/book/lifetimes.md | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/doc/book/lifetimes.md b/src/doc/book/lifetimes.md index 9d30aa85f3f..652ed9d2f73 100644 --- a/src/doc/book/lifetimes.md +++ b/src/doc/book/lifetimes.md @@ -56,7 +56,7 @@ To fix this, we have to make sure that step four never happens after step three. The ownership system in Rust does this through a concept called lifetimes, which describe the scope that a reference is valid for. -**Note** It's important to understand that lifetime annotations are _descriptive_ not _prescriptive_. This means that who long a reference is valid is determined by the code, not by the annotations. The annotations, however, point out this fact to the compiler in case it can't figure it out by itself. +**Note** It's important to understand that lifetime annotations are _descriptive_, not _prescriptive_. This means that how long a reference is valid is determined by the code, not by the annotations. The annotations, however, point out this fact to the compiler in case it can't figure it out by itself. When we have a function that takes an argument by reference, we can be implicit or explicit about the lifetime of the reference: |