switch iterator to vec

rpc-toolkit-macro-internals/src/command/build.rs

@@ -747,7 +747,9 @@ fn cli_handler(
     let fn_turbofish = fn_type_generics.as_turbofish();
     let fn_path: Path = macro_try!(syn::parse2(quote! { super::#fn_name#fn_turbofish }));
     let is_parent = matches!(opt, Options::Parent { .. });
-    let param = params.iter().map(|param| match param {
+    let param: Vec<_> = params
+        .iter()
+        .map(|param| match param {
             ParamType::Arg(arg) => {
                 let name = arg.name.clone().unwrap();
                 let field_name = Ident::new(&format!("arg_{}", name), name.span());
@@ -767,7 +769,8 @@ fn cli_handler(
             ParamType::Request => quote! { request },
             ParamType::Response => quote! { response },
             ParamType::None => unreachable!(),
-    });
+        })
+        .collect();
     let mut param_generics_filter = GenericFilter::new(fn_generics);
     for param in params {
         if let ParamType::Arg(a) = param {