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| author | Jakob Demler <jdemler@curry-software.com> | 2017-02-15 21:21:31 +0100 |
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| committer | Jakob Demler <jdemler@curry-software.com> | 2017-02-15 21:21:31 +0100 |
| commit | 97451996e69a0bb8d98cfe77bd904d8033419ab9 (patch) | |
| tree | a6f3ce9df998c23765f51fbc4637ccbeaa0bdb2e /src | |
| parent | 9a39994ee3a6f825318af9d6ceb23ee3187c7888 (diff) | |
| download | rust-97451996e69a0bb8d98cfe77bd904d8033419ab9.tar.gz rust-97451996e69a0bb8d98cfe77bd904d8033419ab9.zip | |
fixed whitespace issues
Diffstat (limited to 'src')
| -rw-r--r-- | src/doc/book/src/procedural-macros.md | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/src/doc/book/src/procedural-macros.md b/src/doc/book/src/procedural-macros.md index e9777f9992f..468a8f904a4 100644 --- a/src/doc/book/src/procedural-macros.md +++ b/src/doc/book/src/procedural-macros.md @@ -209,7 +209,9 @@ Ok so now, let's compile `hello-world`. Executing `cargo run` now yields: Hello, World! My name is FrenchToast Hello, World! My name is Waffles ``` + ## Custom Attributes + In some cases it might make sense to allow users some kind of configuration. For our example the user might want to overwrite the name that is printed in the `hello_world()` method. @@ -240,8 +242,8 @@ pub fn hello_world(input: TokenStream) -> TokenStream Multiple attributes can be specified that way. - ## Raising Errors + Let's assume that we do not want to accept `Enums` as input to our custom derive method. This condition can be easily checked with the help of `syn`. |