Trait ErasedValueBoxPointer 

pub trait ErasedValueBoxPointer {
    // Required method
    fn with_ptr<R: Any, F>(&self, op: F) -> Result<R>
       where F: FnOnce(NonNull<c_void>) -> Result<R>;

    // Provided method
    fn with_ptr_ok<R: Any, F>(&self, op: F) -> Result<R>
       where F: FnOnce(NonNull<c_void>) -> R { ... }
}

Required Methods

fn with_ptr<R: Any, F>(&self, op: F) -> Result<R>

where F: FnOnce(NonNull<c_void>) -> Result<R>,

Evaluate a given function with a non-null pointer to the boxed value. The pointer must not outlive the closure.

Provided Methods

fn with_ptr_ok<R: Any, F>(&self, op: F) -> Result<R>

where F: FnOnce(NonNull<c_void>) -> R,

Evaluate a given function with a non-null pointer to the boxed value. The pointer must not outlive the closure.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementations on Foreign Types

impl ErasedValueBoxPointer for *const ErasedValueBox

fn with_ptr<R: Any, F>(&self, op: F) -> Result<R>

where F: FnOnce(NonNull<c_void>) -> Result<R>,

impl ErasedValueBoxPointer for *mut ErasedValueBox

fn with_ptr<R: Any, F>(&self, op: F) -> Result<R>

where F: FnOnce(NonNull<c_void>) -> Result<R>,

impl<T: Any> ErasedValueBoxPointer for *mut ValueBox<T>

fn with_ptr<R: Any, F>(&self, op: F) -> Result<R>

where F: FnOnce(NonNull<c_void>) -> Result<R>,

Implementors