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

# Struct std::io::Initializer [−] [src]

    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]

#### `fn zeroing() -> Initializer`

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

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

#### `unsafe fn nop() -> Initializer`

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

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

# Unsafety

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.

#### `fn should_initialize(&self) -> bool`

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

Indicates if a buffer should be initialized.

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

🔬 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, __arg_0: &mut Formatter) -> Result`

Formats the value using the given formatter.

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