rocket linting issues

szabgab · szabgab · commit 741addaff877 · 2024-01-18T18:03:43.000+02:00
diff --git a/pages/rocket-linting.md b/pages/rocket-linting.md
@@ -0,0 +1,64 @@
+---
+title: Rocket liniting issues
+timestamp: 2024-01-18T18:10:01
+author: szabgab
+published: true
+description: Demonstrating and dealing with linting issues in web applications written using Rust Rocket.
+tags:
+    - Rocket
+    - Clippy
+    - lint
+---
+
+Recently I started to use Clippy extensively and also applied it to my [Rocket](/rocket)-based projects.
+
+On this page I am going to collected the linting issues I've encountered and hope to also provide answers.
+
+
+![](examples/rocket/lint/Cargo.toml)
+
+![](examples/rocket/lint/src/main.rs)
+
+
+```
+cargo clippy -- -Dclippy::no_effect_underscore_binding
+```
+
+complains:
+
+```
+
+    Checking lint v0.1.0 (/home/gabor/work/rust.code-maven.com/lint)
+error: binding to `_` prefixed variable with no side-effect
+  --> src/main.rs:15:17
+   |
+15 |                 hello_world
+   |                 ^^^^^^^^^^^
+   |
+   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#no_effect_underscore_binding
+   = note: requested on the command line with `-D clippy::no-effect-underscore-binding`
+
+error: binding to `_` prefixed variable with no side-effect
+  --> src/main.rs:15:17
+   |
+15 |                 hello_world
+   |                 ^^^^^^^^^^^
+   |
+   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#no_effect_underscore_binding
+
+error: binding to `_` prefixed variable with no side-effect
+  --> src/main.rs:10:16
+   |
+10 | fn rocket() -> _ {
+   |                ^
+   |
+   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#no_effect_underscore_binding
+
+error: could not compile `lint` (bin "lint") due to 3 previous errors
+```
+
+Reported as [no_effect_underscore_binding false positive for Rocket routes](https://github.com/rust-lang/rust-clippy/issues/12166)
+
+
+
+
diff --git a/pages/rocket.md b/pages/rocket.md
@@ -32,3 +32,4 @@ code of each one of them from [Rust Maven GitHub repo](https://github.com/szabga
 * [Single counter in a plain text file](/rocket-single-counter-in-text-file).
 * [Multi-counter using cookies](/rocket-multi-counter-using-cookies) - `CookieJar`, `add`, `get`.
 * [Multi counter using encrypted cookies](/rocket-multi-counter-using-encrypted-cookies) - `add_private`, `get_private`, `secret_key`,`Rocket.toml`, `private_cookie`.
+* [Liniting issues with Rocket](/rocket-linting) - Clippy
