---

yaml
---
r: 190816
b: refs/heads/master
c: 8a8b2ce
h: refs/heads/master
v: v3

Author: steveklabnik

[refs]

@@ -1,5 +1,5 @@
 ---
-refs/heads/master: 351721cde6534d0a20bda8cbacc0019fca6caf3f
+refs/heads/master: 8a8b2cecbc1fab7ffa4a20efb6dc4deed876571e
 refs/heads/snap-stage1: e33de59e47c5076a89eadeb38f4934f58a3618a6
 refs/heads/snap-stage3: c64d671671aea2e44ee7fc6eb00ee75fc30ed7b9
 refs/heads/try: 1c28ab65017d74fc13d003f7c7a73d1a48e5406f

trunk/src/libcollections/fmt.rs

@@ -105,11 +105,18 @@
 //! hexadecimal as well as an
 //! octal.
 //!
-//! There are various parameters which do require a particular type, however.
-//! Namely if the syntax `{:.*}` is used, then the number of characters to print
-//! precedes the actual object being formatted, and the number of characters
-//! must have the type `usize`. Although a `usize` can be printed with `{}`, it is
-//! illegal to reference an argument as such. For example this is another
+//! There are various parameters which do require a particular type, however. Namely, the `{:.*}`
+//! syntax, which sets the number of numbers after the decimal in floating-point types:
+//!
+//! ```
+//! let formatted_number = format!("{:.*}", 2, 1.234567);
+//!
+//! assert_eq!("1.23", formatted_number)
+//! ```
+//!
+//! If this syntax is used, then the number of characters to print precedes the actual object being
+//! formatted, and the number of characters must have the type `usize`. Although a `usize` can be
+//! printed with `{}`, it is illegal to reference an argument as such. For example this is another
 //! invalid format string:
 //!
 //! ```text