Trait InferenceVarDataChanged 

pub trait InferenceVarDataChanged {
    // Required method
    fn did_change(&self) -> bool;
}

Trait implemented by types returned by mutation methods like InferenceVarData::set_red_perm_bound or InferenceVarData::set_red_ty_bound. Can be used to check if those return values indicate that the inference var data was actually changed.

Required Methods

fn did_change(&self) -> bool

Implementations on Foreign Types

impl InferenceVarDataChanged for Option<ArcOrElse<'_>>

fn did_change(&self) -> bool

impl InferenceVarDataChanged for bool

fn did_change(&self) -> bool

impl InferenceVarDataChanged for ()

fn did_change(&self) -> bool

Implementors