Try to compile: Rust Playground A browser interface to the Rust compiler to experiment with the language #[derive(Debug)] struct Foo { ops: fn(&mut Foo), } fn main() { } Results in: error[E0277]: `for<'r> fn(&'r mut Foo)` doesn't implement `std::…

Why does not a function generic over a lifetime implement Debug?

vitalyd June 1, 2018, 6:06pm 2

This is essentially the same issue as Display function pointer

But, how would you like to see this displayed?

1 Like

Topic		Replies	Views
Impl of `Debug` is not general enough ERROR help	5	1666	November 30, 2021
Fmt::Debug not implemented for function type with reference argument help	5	2617	January 12, 2023
Puzzle about the lifetime `&'a mut self ` [Solved by code refactor] help	8	503	December 30, 2021
Is there any plan to implement basic traits on function pointers that don't take by value?	10	1910	January 12, 2023
Problems implementing traits for functions help	10	573	January 12, 2023