diff options
| -rw-r--r-- | src/libcollections/fmt.rs | 25 |
1 files changed, 4 insertions, 21 deletions
diff --git a/src/libcollections/fmt.rs b/src/libcollections/fmt.rs index bd74848a01d..079541235a2 100644 --- a/src/libcollections/fmt.rs +++ b/src/libcollections/fmt.rs @@ -62,7 +62,7 @@ //! //! A format string is required to use all of its arguments, otherwise it is a //! compile-time error. You may refer to the same argument more than once in the -//! format string, although it must always be referred to with the same type. +//! format string. //! //! ## Named parameters //! @@ -89,19 +89,8 @@ //! //! ## Argument types //! -//! Each argument's type is dictated by the format string. It is a requirement -//! that every argument is only ever referred to by one type. For example, this -//! is an invalid format string: -//! -//! ```text -//! {0:x} {0:o} -//! ``` -//! -//! This is invalid because the first argument is both referred to as a -//! hexadecimal as well as an -//! octal. -//! -//! There are various parameters which do require a particular type, however. +//! Each argument's type is dictated by the format string. +//! There are various parameters which require a particular type, however. //! An example is the `{:.*}` syntax, which sets the number of decimal places //! in floating-point types: //! @@ -113,13 +102,7 @@ //! //! 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 invalid to -//! reference an argument as such. For example this is another invalid format -//! string: -//! -//! ```text -//! {:.*} {0} -//! ``` +//! type `usize`. //! //! ## Formatting traits //! |