std::io::Initializer - Rust
Description: API documentation for the Rust `Initializer` struct in crate `std`.
Keywords: rust, rustlang, rust-lang, Initializer

# [−][src]Struct std::io::Initializer

    pub struct Initializer(_);

🔬 This is a nightly-only experimental API. (`read_initializer` #42788)

A type used to conditionally initialize buffers passed to `Read` methods.

## Methods

### `impl Initializer`[src]

#### `pub fn zeroing() -> Initializer`[src]

🔬 This is a nightly-only experimental API. (`read_initializer` #42788)

Returns a new `Initializer` which will zero out buffers.

#### `pub unsafe fn nop() -> Initializer`[src]

🔬 This is a nightly-only experimental API. (`read_initializer` #42788)

Returns a new `Initializer` which will not zero out buffers.

# Safety

This may only be called by `Read`ers which guarantee that they will not read from buffers passed to `Read` methods, and that the return value of the method accurately reflects the number of bytes that have been written to the head of the buffer.

#### `pub fn should_initialize(&self) -> bool`[src]

🔬 This is a nightly-only experimental API. (`read_initializer` #42788)

Indicates if a buffer should be initialized.

#### `pub fn initialize(&self, buf: &mut [u8])`[src]

🔬 This is a nightly-only experimental API. (`read_initializer` #42788)

Initializes a buffer if necessary.

## Trait Implementations

### `impl Debug for Initializer`[src]

#### `fn fmt(&self, f: &mut Formatter) -> Result`[src]

Formats the value using the given formatter. Read more

## Auto Trait Implementations

### `impl RefUnwindSafe for Initializer`

### `impl Send for Initializer`

### `impl Sync for Initializer`

### `impl Unpin for Initializer`

### `impl UnwindSafe for Initializer`

## Blanket Implementations

### `impl<T> Any for T where
T: 'static + ?Sized,` [src]

#### `fn type_id(&self) -> TypeId`[src]

Gets the `TypeId` of `self`. Read more

### `impl<T> Borrow<T> for T where
T: ?Sized,` [src]

#### `fn borrow(&self) -> &T`[src]

Immutably borrows from an owned value. Read more

### `impl<T> BorrowMut<T> for T where
T: ?Sized,` [src]

#### `fn borrow_mut(&mut self) -> &mut T`[src]

Mutably borrows from an owned value. Read more

### `impl<T> From<T> for T`[src]

#### `fn from(t: T) -> T`[src]

Performs the conversion.

### `impl<T, U> Into<U> for T where
U: From<T>,` [src]

#### `fn into(self) -> U`[src]

Performs the conversion.

### `impl<T, U> TryFrom<U> for T where
U: Into<T>,` [src]

#### `type Error = Infallible`

The type returned in the event of a conversion error.

#### `fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>`[src]

Performs the conversion.

### `impl<T, U> TryInto<U> for T where
U: TryFrom<T>,` [src]

#### `type Error = <U as TryFrom<T>>::Error`

The type returned in the event of a conversion error.

#### `fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>`[src]

Performs the conversion.