Trait collections::fmt::Display 1.0.0
[−]
[src]
pub trait Display {
fn fmt(&self, f: &mut Formatter) -> Result<(), Error>;
}Format trait for an empty format, {}.
Display is similar to Debug, but Display is for user-facing
output, and so cannot be derived.
For more information on formatters, see the module-level documentation.
Examples
Implementing Display on a type:
use std::fmt; struct Point { x: i32, y: i32, } impl fmt::Display for Point { fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { write!(f, "({}, {})", self.x, self.y) } } let origin = Point { x: 0, y: 0 }; println!("The origin is: {}", origin);Run
Required Methods
fn fmt(&self, f: &mut Formatter) -> Result<(), Error>
Formats the value using the given formatter.
Examples
use std::fmt; struct Position { longitude: f32, latitude: f32, } impl fmt::Display for Position { fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { write!(f, "({}, {})", self.longitude, self.latitude) } } assert_eq!("(1.987, 2.983)".to_owned(), format!("{}", Position { longitude: 1.987, latitude: 2.983, }));Run
Implementors
impl<T> Display for Box<T> where
T: Display + ?Sized,impl<T> Display for Rc<T> where
T: Display + ?Sized,impl<T> Display for Arc<T> where
T: Display + ?Sized,impl Display for ToUppercaseimpl Display for DecodeUtf16Errorimpl Display for ToLowercaseimpl Display for i8impl Display for f32impl Display for boolimpl Display for i32impl Display for ParseIntErrorimpl Display for EscapeUnicodeimpl Display for i64impl Display for u32impl Display for Utf8Errorimpl<'a, T> Display for &'a mut T where
T: Display + ?Sized,impl Display for CharTryFromErrorimpl Display for strimpl Display for TryFromIntErrorimpl<'a> Display for Arguments<'a>impl Display for charimpl Display for BorrowMutErrorimpl Display for i16impl Display for f64impl Display for EscapeDefaultimpl Display for EscapeDebugimpl Display for ParseBoolErrorimpl Display for Errorimpl Display for BorrowErrorimpl Display for u128impl Display for usizeimpl Display for ParseFloatErrorimpl<'a, T> Display for &'a T where
T: Display + ?Sized,impl Display for u16impl Display for i128impl<T> Display for Wrapping<T> where
T: Display,impl Display for !impl Display for u64impl Display for u8impl Display for isizeimpl<'a, B: ?Sized> Display for Cow<'a, B> where
B: Display + ToOwned,
<B as ToOwned>::Owned: Display,impl Display for FromUtf8Errorimpl Display for FromUtf16Errorimpl Display for Stringimpl Display for ParseError