core::io::cursor

Trait WriteThroughCursor

#[doc(hidden)]
pub trait WriteThroughCursor: Sized {
    // Required methods
    fn write(this: &mut Cursor<Self>, buf: &[u8]) -> Result<usize>;
    fn write_vectored(
        this: &mut Cursor<Self>,
        bufs: &[IoSlice<'_>],
    ) -> Result<usize>;
    fn is_write_vectored(this: &Cursor<Self>) -> bool;
    fn write_all(this: &mut Cursor<Self>, buf: &[u8]) -> Result<()>;
    fn write_all_vectored(
        this: &mut Cursor<Self>,
        bufs: &mut [IoSlice<'_>],
    ) -> Result<()>;
    fn flush(this: &mut Cursor<Self>) -> Result<()>;
}

🔬This is a nightly-only experimental API. (core_io_internals)

Expand description

Trait used to allow indirect implementation of Write for Cursor<Self>. Since Cursor is not a foundational type, it is not possible to implement Write for Cursor<T> if Write is defined in libcore and T is in a downstream crate (e.g., liballoc or libstd).

Methods are identical in purpose and meaning to their Write namesakes.