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Rollup merge of #43366 - leshow:bufreader-docs, r=aturon

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Fix docs: BufReader/File doesn't need to be mut

Neither `BufReader` nor `File` need to be declared `mut` for most of these examples. The cookbook example using `BufReader` doesn't declare them as `mut` either (https://brson.github.io/rust-cookbook/basics.html#ex-std-read-lines).
This commit is contained in:
Mark Simulacrum 2017-07-24 09:16:33 -06:00 committed by GitHub
commit f1537da0e8
1 changed files with 10 additions and 10 deletions
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20
src/libstd/io/buffered.rs
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@ -37,7 +37,7 @@
/// use std::fs::File;
///
/// # fn foo() -> std::io::Result<()> {
/// let mut f = File::open("log.txt")?;
/// let f = File::open("log.txt")?;
/// let mut reader = BufReader::new(f);
///
/// let mut line = String::new();
@ -64,8 +64,8 @@ impl<R: Read> BufReader<R> {
/// use std::fs::File;
///
/// # fn foo() -> std::io::Result<()> {
/// let mut f = File::open("log.txt")?;
/// let mut reader = BufReader::new(f);
/// let f = File::open("log.txt")?;
/// let reader = BufReader::new(f);
/// # Ok(())
/// # }
/// ```
@ -85,8 +85,8 @@ pub fn new(inner: R) -> BufReader<R> {
/// use std::fs::File;
///
/// # fn foo() -> std::io::Result<()> {
/// let mut f = File::open("log.txt")?;
/// let mut reader = BufReader::with_capacity(10, f);
/// let f = File::open("log.txt")?;
/// let reader = BufReader::with_capacity(10, f);
/// # Ok(())
/// # }
/// ```
@ -116,8 +116,8 @@ pub fn with_capacity(cap: usize, inner: R) -> BufReader<R> {
/// use std::fs::File;
///
/// # fn foo() -> std::io::Result<()> {
/// let mut f1 = File::open("log.txt")?;
/// let mut reader = BufReader::new(f1);
/// let f1 = File::open("log.txt")?;
/// let reader = BufReader::new(f1);
///
/// let f2 = reader.get_ref();
/// # Ok(())
@ -137,7 +137,7 @@ pub fn get_ref(&self) -> &R { &self.inner }
/// use std::fs::File;
///
/// # fn foo() -> std::io::Result<()> {
/// let mut f1 = File::open("log.txt")?;
/// let f1 = File::open("log.txt")?;
/// let mut reader = BufReader::new(f1);
///
/// let f2 = reader.get_mut();
@ -158,8 +158,8 @@ pub fn get_mut(&mut self) -> &mut R { &mut self.inner }
/// use std::fs::File;
///
/// # fn foo() -> std::io::Result<()> {
/// let mut f1 = File::open("log.txt")?;
/// let mut reader = BufReader::new(f1);
/// let f1 = File::open("log.txt")?;
/// let reader = BufReader::new(f1);
///
/// let f2 = reader.into_inner();
/// # Ok(())