pub trait Display {
// Required method
fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>;
}Expand description
Format trait for an empty format, {}.
Implementing this trait for a type will automatically implement the
ToString trait for the type, allowing the usage
of the .to_string() method. Prefer implementing
the Display trait for a type, rather than ToString.
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 };
assert_eq!(format!("The origin is: {origin}"), "The origin is: (0, 0)");Required Methods§
sourcefn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>
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)",
format!("{}", Position { longitude: 1.987, latitude: 2.983, }));Implementors§
impl Display for AsciiChar
impl Display for Infallible
impl Display for IpAddr
impl Display for SocketAddr
impl Display for CheckedCastError
impl Display for PodCastError
impl Display for comfy_wgpu::crossbeam::channel::RecvTimeoutError
impl Display for comfy_wgpu::crossbeam::channel::TryRecvError
impl Display for TextStyle
impl Display for FontFamily
impl Display for ComponentError
impl Display for QueryOneError
impl Display for ImageError
impl Display for ImageFormatHint
impl Display for comfy_wgpu::image::flat::Error
impl Display for CommandError
impl Display for comfy_wgpu::kira::manager::backend::cpal::Error
impl Display for AddClockError
impl Display for AddModulatorError
impl Display for AddSpatialSceneError
impl Display for AddSubTrackError
impl Display for FromFileError
impl Display for AddEmitterError
impl Display for AddListenerError
impl Display for SetRouteError
impl Display for Level
impl Display for LevelFilter
impl Display for ExternalError
impl Display for XNotSupported
impl Display for BadIcon
impl Display for CollectionAllocErr
impl Display for VarError
impl Display for ErrorKind
impl Display for std::sync::mpsc::RecvTimeoutError
impl Display for std::sync::mpsc::TryRecvError
impl Display for WgpuError
impl Display for wgpu::Error
impl Display for wgpu::SurfaceError
impl Display for BernoulliError
impl Display for WeightedError
impl Display for bool
impl Display for char
impl Display for f32
impl Display for f64
impl Display for i8
impl Display for i16
impl Display for i32
impl Display for i64
impl Display for i128
impl Display for isize
impl Display for !
impl Display for str
impl Display for u8
impl Display for u16
impl Display for u32
impl Display for u64
impl Display for u128
impl Display for usize
impl Display for AllocError
impl Display for comfy_wgpu::bytemuck::__core::alloc::LayoutError
impl Display for comfy_wgpu::bytemuck::__core::array::TryFromSliceError
impl Display for comfy_wgpu::bytemuck::__core::ascii::EscapeDefault
impl Display for comfy_wgpu::bytemuck::__core::cell::BorrowError
impl Display for comfy_wgpu::bytemuck::__core::cell::BorrowMutError
impl Display for CharTryFromError
impl Display for DecodeUtf16Error
impl Display for comfy_wgpu::bytemuck::__core::char::EscapeDebug
impl Display for comfy_wgpu::bytemuck::__core::char::EscapeDefault
impl Display for comfy_wgpu::bytemuck::__core::char::EscapeUnicode
impl Display for ParseCharError
impl Display for ToLowercase
impl Display for ToUppercase
impl Display for TryFromCharError
impl Display for FromBytesUntilNulError
impl Display for FromBytesWithNulError
impl Display for Arguments<'_>
impl Display for comfy_wgpu::bytemuck::__core::fmt::Error
impl Display for AddrParseError
impl Display for Ipv4Addr
impl Display for Ipv6Addr
Write an Ipv6Addr, conforming to the canonical style described by RFC 5952.