Rollup merge of #105128 - Sp00ph:vec_vec_deque_conversion, r=dtolnay

[rust.git] / library / alloc / src / fmt.rs

diff --git a/library/alloc/src/fmt.rs b/library/alloc/src/fmt.rs
index ed398b56612ce700f68b444f6aaf0da652850dd5..eadb35cb96d422cfcdc84250b820b7cef65ea54c 100644 (file)
--- a/library/alloc/src/fmt.rs
+++ b/library/alloc/src/fmt.rs
@@ -327,7 +327,7 @@
 //! - `text` must not contain any `'{'` or `'}'` characters,
 //! - `ws` is any character for which [`char::is_whitespace`] returns `true`, has no semantic
 //!   meaning and is completely optional,
-//! - `integer` is a decimal integer that may contain leading zeroes and
+//! - `integer` is a decimal integer that may contain leading zeroes and must fit into an `usize` and
 //! - `identifier` is an `IDENTIFIER_OR_KEYWORD` (not an `IDENTIFIER`) as defined by the [Rust language reference](https://doc.rust-lang.org/reference/identifiers.html).
 //!
 //! # Formatting traits
@@ -419,7 +419,7 @@
 //!         // documentation for details, and the function `pad` can be used
 //!         // to pad strings.
 //!         let decimals = f.precision().unwrap_or(3);
-//!         let string = format!("{:.*}", decimals, magnitude);
+//!         let string = format!("{magnitude:.decimals$}");
 //!         f.pad_integral(true, "", &string)
 //!     }
 //! }
@@ -518,7 +518,7 @@
 //! write!(&mut some_writer, "{}", format_args!("print with a {}", "macro"));
 //!
 //! fn my_fmt_fn(args: fmt::Arguments) {
-//!     write!(&mut io::stdout(), "{}", args);
+//!     write!(&mut io::stdout(), "{args}");
 //! }
 //! my_fmt_fn(format_args!(", or a {} too", "function"));
 //! ```