Trait core::fmt::Display 1.0.0
[−]
[src]
pub trait Display {
fn fmt(&self, f: &mut Formatter) -> Result;
}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
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 Display for ParseFloatErrorimpl<T: Display> Display for Wrapping<T>impl Display for TryFromIntErrorimpl Display for ParseIntErrorimpl Display for BorrowErrorimpl Display for BorrowMutErrorimpl<'a, T: ?Sized + Display> Display for Ref<'a, T>impl<'a, T: ?Sized + Display> Display for RefMut<'a, T>impl Display for ParseCharErrorimpl Display for CharTryFromErrorimpl Display for EscapeUnicodeimpl Display for EscapeDefaultimpl Display for EscapeDebugimpl Display for ParseBoolErrorimpl Display for Utf8Errorimpl Display for f32impl Display for f64impl Display for i8impl Display for u8impl Display for i16impl Display for u16impl Display for i32impl Display for u32impl Display for i64impl Display for u64impl Display for i128impl Display for u128impl Display for isizeimpl Display for usizeimpl<'a> Display for Arguments<'a>impl Display for Errorimpl<'a, T: ?Sized + Display> Display for &'a Timpl<'a, T: ?Sized + Display> Display for &'a mut Timpl Display for !impl Display for boolimpl Display for strimpl Display for char