Type mismatch error while trying to compile examples/simple.rs

[ngirard]

Got the following error while trying to compile:

cargo run --example simple

error[E0631]: type mismatch in function arguments
  --> examples/simple.rs:14:36
   |
14 |     ItemList::new(rustofi_entries, Box::new(simple_callback)).display("Select an entry".to_string())
   |                                    ^^^^^^^^^^^^^^^^^^^^^^^^^ expected signature of `for<'r> fn(&'r mut std::string::String) -> _`
...
17 | pub fn simple_callback(s: &String) -> RustofiResult {
   | --------------------------------------------------- found signature of `for<'r> fn(&'r std::string::String) -> _`
   |
   = note: required because of the requirements on the impl of `rustofi::RustofiCallback<std::string::String>` for `for<'r> fn(&'r std::string::String) -> rustofi::RustofiResult {simple_callback}`
   = note: required for the cast to the object type `dyn for<'r> rustofi::RustofiCallback<std::string::String, Output = std::result::Result<(), std::string::String>>`

[mattlennon3]

I get the same issue, the todo_app.rs works when you clone this repo locally and run it, but if you make a fresh project and paste it in as main.rs with the latest rustofi v0.2.2 and other dependencies you get the same error.

I completely accidentally found the fix while trawling through some forums. This will get you compiling:

// change this:
    pub fn toggle_todo(t: &mut TodoItem) -> CallbackResult {

// to this
    pub fn toggle_todo<'r>(t: &'r TodoItem) -> RustofiResult {

// get rid of the 3rd arg in AppPage
        AppPage::<TodoItem>::new(
            todos,
            Box::new(TodoApp::toggle_todo)
        )

Fixing those brings more errors, but they seem easy to overcome, just returning the right values etc. I didn't want to fix the whole file :).

hopefully from here you can use the todo as a good example of how to use this crate.

Still not sure about integrating with rofi properly, but I have an executable I can call and that is good enough atm!

[mattlennon3]

I made some progress today and I have finally understood what is going on with the AppPage constructor!

The master branch is at version 0.3.0 but the latest crate is 0.2.2. This is why the todo_app works in the repo but not with the crate. I think for now I will just use a locally compiled crate to have 0.3.0 - I need the custom actions for my project.