diff options
Diffstat (limited to 'src/doc/rust-by-example/src/error/option_unwrap/defaults.md')
-rw-r--r-- | src/doc/rust-by-example/src/error/option_unwrap/defaults.md | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/src/doc/rust-by-example/src/error/option_unwrap/defaults.md b/src/doc/rust-by-example/src/error/option_unwrap/defaults.md index c998ad9ad..eb515aee6 100644 --- a/src/doc/rust-by-example/src/error/option_unwrap/defaults.md +++ b/src/doc/rust-by-example/src/error/option_unwrap/defaults.md @@ -8,7 +8,7 @@ The is more than one way to unpack an `Option` and fall back on a default if it `or()`is chainable and eagerly evaluates its argument, as is shown in the following example. Note that because `or`'s arguments are evaluated eagerly, the variable passed to `or` is moved. -``` +```rust,editable #[derive(Debug)] enum Fruit { Apple, Orange, Banana, Kiwi, Lemon } @@ -33,7 +33,7 @@ fn main() { Another alternative is to use `or_else`, which is also chainable, and evaluates lazily, as is shown in the following example: -``` +```rust,editable #[derive(Debug)] enum Fruit { Apple, Orange, Banana, Kiwi, Lemon } @@ -58,11 +58,11 @@ fn main() { } ``` -## `get_or_insert()` evaluates eagerly, modifies empty value im place +## `get_or_insert()` evaluates eagerly, modifies empty value in place To make sure that an `Option` contains a value, we can use `get_or_insert` to modify it in place with a fallback value, as is shown in the following example. Note that `get_or_insert` eagerly evaluaes its parameter, so variable `apple` is moved: -``` +```rust,editable #[derive(Debug)] enum Fruit { Apple, Orange, Banana, Kiwi, Lemon } @@ -79,10 +79,10 @@ fn main() { } ``` -## `get_or_insert_with()` evaluates lazily, modifies empty value im place +## `get_or_insert_with()` evaluates lazily, modifies empty value in place Instead of explicitly providing a value to fall back on, we can pass a closure to `get_or_insert_with`, as follows: -``` +```rust,editable #[derive(Debug)] enum Fruit { Apple, Orange, Banana, Kiwi, Lemon } |