chore: use variables in Rust format strings

Change this:

    format!("{}", foo)

into this:

    format!("{foo}")

Support for this feature was added in Rust 1.58 (see
https://github.com/rust-lang/rust/releases/tag/1.58.0) and in 1.67
clippy suggests about this. Because the new style seems to be where
the Rust ecosystem is going, I think Subplot should follow to avoid
being needlessly different from most other projects.

Sponsored-by: author

1 files changed, 1 insertions, 7 deletions

diff --git a/subplotlib-derive/src/lib.rs b/subplotlib-derive/src/lib.rs
index 7aef0dc..584d730 100644
--- a/subplotlib-derive/src/lib.rs
+++ b/subplotlib-derive/src/lib.rs
@@ -403,10 +403,7 @@ fn process_step(mut input: ItemFn) -> proc_macro2::TokenStream {
         for context in outer_ctx.into_iter().chain(contexts.iter()) {
             write!(contextattrs, "\n    #[context({:?})]", ty_as_path(context)?).unwrap();
         }
-        let func_args: Vec<_> = fields
-            .iter()
-            .map(|(ident, _)| format!("{}", ident))
-            .collect();
+        let func_args: Vec<_> = fields.iter().map(|(ident, _)| format!("{ident}")).collect();
         let func_args = func_args.join(", ");
         format!(
             r#"
@@ -424,9 +421,6 @@ fn process_step(mut input: ItemFn) -> proc_macro2::TokenStream {
     }}
     ```
     "#,
-            stepname = stepname,
-            contextattrs = contextattrs,
-            func_args = func_args,
         )
     };
     let ret = quote! {