core::fmt::write - Rust
Description: API documentation for the Rust `write` fn in crate `core`.
Keywords: rust, rustlang, rust-lang, write

# Function core::fmt::write 1.0.0[−][src]

    pub fn write(output: &mut Write, args: Arguments) -> Result

The `write` function takes an output stream, and an `Arguments` struct that can be precompiled with the `format_args!` macro.

The arguments will be formatted according to the specified format string into the output stream provided.

# Examples

Basic usage:

    use std::fmt;

    let mut output = String::new();
    fmt::write(&mut output, format_args!("Hello {}!", "world"))
        .expect("Error occurred while trying to write in String");
    assert_eq!(output, "Hello world!");Run

Please note that using `write!` might be preferable. Example:

    use std::fmt::Write;

    let mut output = String::new();
    write!(&mut output, "Hello {}!", "world")
        .expect("Error occurred while trying to write in String");
    assert_eq!(output, "Hello world!");Run

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