# Struct std::process::ChildStdin 1.0.0[−][src]

    pub struct ChildStdin { /* fields omitted */ }

A handle to a child process's standard input (stdin).

This struct is used in the `stdin` field on `Child`.

When an instance of `ChildStdin` is dropped, the `ChildStdin`'s underlying file handle will be closed. If the child process was blocked on input prior to being dropped, it will become unblocked after dropping.

## Trait Implementations

### `impl AsRawFd for ChildStdin` 1.2.0[src]

This is supported on Unix only.

#### `fn as_raw_fd(&self) -> RawFd`[src]

Extracts the raw file descriptor. Read more

### `impl AsRawHandle for ChildStdin` 1.2.0[src]

This is supported on Windows only.

#### `fn as_raw_handle(&self) -> RawHandle`[src]

Extracts the raw handle, without taking any ownership.

### `impl Debug for ChildStdin` 1.16.0[src]

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

Formats the value using the given formatter. Read more

### `impl From<ChildStdin> for Stdio` 1.20.0[src]

#### `fn from(child: ChildStdin) -> Stdio`[src]

Converts a `ChildStdin` into a `Stdio`

# Examples

`ChildStdin` will be converted to `Stdio` using `Stdio::from` under the hood.

    use std::process::{Command, Stdio};

    let reverse = Command::new("rev")
        .stdin(Stdio::piped())
        .spawn()
        .expect("failed reverse command");

    let _echo = Command::new("echo")
        .arg("Hello, world!")
        .stdout(reverse.stdin.unwrap()) // Converted into a Stdio here
        .output()
        .expect("failed echo command");

    // "!dlrow ,olleH" echoed to console

Run

### `impl IntoRawFd for ChildStdin` 1.4.0[src]

This is supported on Unix only.

#### `fn into_raw_fd(self) -> RawFd`[src]

Consumes this object, returning the raw underlying file descriptor. Read more

### `impl IntoRawHandle for ChildStdin` 1.4.0[src]

This is supported on Windows only.

#### `fn into_raw_handle(self) -> RawHandle`[src]

Consumes this object, returning the raw underlying handle. Read more

### `impl Write for ChildStdin`[src]

#### `fn write(&mut self, buf: &[u8]) -> Result<usize>`[src]

Write a buffer into this writer, returning how many bytes were written. Read more

#### `fn write_vectored(&mut self, bufs: &[IoSlice<'_>]) -> Result<usize>`[src]

Like `write`, except that it writes from a slice of buffers. Read more

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

🔬 This is a nightly-only experimental API. (`can_vector` #69941)

Determines if this `Write`r has an efficient `write_vectored` implementation. Read more

#### `fn flush(&mut self) -> Result<()>`[src]

Flush this output stream, ensuring that all intermediately buffered contents reach their destination. Read more

#### `fn write_all(&mut self, mut buf: &[u8]) -> Result<()>`[src]

Attempts to write an entire buffer into this writer. Read more

#### `fn write_all_vectored(&mut self, mut bufs: &mut [IoSlice<'_>]) -> Result<()>`[src]

🔬 This is a nightly-only experimental API. (`write_all_vectored` #70436)

Attempts to write multiple buffers into this writer. Read more

#### `fn write_fmt(&mut self, fmt: Arguments<'_>) -> Result<()>`[src]

Writes a formatted string into this writer, returning any error encountered. Read more

#### `fn by_ref(&mut self) -> &mut Selfⓘ

### Notable traits for &'_ mut F

`impl<'_, F> Future for &'_ mut F where
F: Unpin + Future + ?Sized, type Output = <F as Future>::Output;impl<'_, I> Iterator for &'_ mut I where
I: Iterator + ?Sized, type Item = <I as Iterator>::Item;impl<R: Read + ?Sized> Read for &mut Rimpl<W: Write + ?Sized> Write for &mut W`
where
Self: Sized,` [src]

Creates a "by reference" adaptor for this instance of `Write`. Read more

### `impl Write for &ChildStdin` 1.48.0[src]

#### `fn write(&mut self, buf: &[u8]) -> Result<usize>`[src]

Write a buffer into this writer, returning how many bytes were written. Read more

#### `fn write_vectored(&mut self, bufs: &[IoSlice<'_>]) -> Result<usize>`[src]

Like `write`, except that it writes from a slice of buffers. Read more

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

🔬 This is a nightly-only experimental API. (`can_vector` #69941)

Determines if this `Write`r has an efficient `write_vectored` implementation. Read more

#### `fn flush(&mut self) -> Result<()>`[src]

Flush this output stream, ensuring that all intermediately buffered contents reach their destination. Read more

#### `fn write_all(&mut self, mut buf: &[u8]) -> Result<()>`[src]

Attempts to write an entire buffer into this writer. Read more

#### `fn write_all_vectored(&mut self, mut bufs: &mut [IoSlice<'_>]) -> Result<()>`[src]

🔬 This is a nightly-only experimental API. (`write_all_vectored` #70436)

Attempts to write multiple buffers into this writer. Read more

#### `fn write_fmt(&mut self, fmt: Arguments<'_>) -> Result<()>`[src]

Writes a formatted string into this writer, returning any error encountered. Read more

#### `fn by_ref(&mut self) -> &mut Selfⓘ

### Notable traits for &'_ mut F

`impl<'_, F> Future for &'_ mut F where
F: Unpin + Future + ?Sized, type Output = <F as Future>::Output;impl<'_, I> Iterator for &'_ mut I where
I: Iterator + ?Sized, type Item = <I as Iterator>::Item;impl<R: Read + ?Sized> Read for &mut Rimpl<W: Write + ?Sized> Write for &mut W`
where
Self: Sized,` [src]

Creates a "by reference" adaptor for this instance of `Write`. Read more

## Auto Trait Implementations

### `impl RefUnwindSafe for ChildStdin`[src]

### `impl Send for ChildStdin`[src]

### `impl Sync for ChildStdin`[src]

### `impl Unpin for ChildStdin`[src]

### `impl UnwindSafe for ChildStdin`[src]

## Blanket Implementations

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

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

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

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

#### `pub fn borrow(&self) -> &Tⓘ

### Notable traits for &'_ mut F

`impl<'_, F> Future for &'_ mut F where
F: Unpin + Future + ?Sized, type Output = <F as Future>::Output;impl<'_, I> Iterator for &'_ mut I where
I: Iterator + ?Sized, type Item = <I as Iterator>::Item;impl<R: Read + ?Sized> Read for &mut Rimpl<W: Write + ?Sized> Write for &mut W`
`[src]

Immutably borrows from an owned value. Read more

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

#### `pub fn borrow_mut(&mut self) -> &mut Tⓘ

### Notable traits for &'_ mut F

`impl<'_, F> Future for &'_ mut F where
F: Unpin + Future + ?Sized, type Output = <F as Future>::Output;impl<'_, I> Iterator for &'_ mut I where
I: Iterator + ?Sized, type Item = <I as Iterator>::Item;impl<R: Read + ?Sized> Read for &mut Rimpl<W: Write + ?Sized> Write for &mut W`
`[src]

Mutably borrows from an owned value. Read more

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

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

Performs the conversion.

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

#### `pub 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.

#### `pub 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.

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

Performs the conversion.