Trait druid::piet::cairo::glib::bitflags::_core::fmt::Display

1.0.0 · source ·

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§

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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, }));

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impl Display for InvalidCharError

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impl Display for Infallible

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impl Display for IpAddr

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impl Display for SocketAddr

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impl Display for VarError

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impl Display for std::io::error::ErrorKind

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impl Display for RecvTimeoutError

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impl Display for std::sync::mpsc::TryRecvError

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impl Display for FluentError

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impl Display for fluent_syntax::parser::errors::ErrorKind

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impl Display for log::Level

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impl Display for log::LevelFilter

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impl Display for simplecss::Error

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impl Display for PseudoClass<'_>

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impl Display for usvg::error::Error

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impl Display for bool

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impl Display for char

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impl Display for f32

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impl Display for f64

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impl Display for i8

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impl Display for i16

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impl Display for i32

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impl Display for i64

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impl Display for i128

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impl Display for isize

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impl Display for !

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impl Display for str

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impl Display for u8

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impl Display for u16

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impl Display for u32

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impl Display for u64

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impl Display for u128

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impl Display for usize

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impl Display for MissingKeyError

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impl Display for ExtEventError

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impl Display for druid::Monitor

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impl Display for druid::Point

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impl Display for druid::Rect

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impl Display for druid::Size

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impl Display for ValueTypeError

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impl Display for druid::Vec2

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impl Display for ValidationError

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impl Display for druid::piet::image_crate::error::DecodingError

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impl Display for druid::piet::image_crate::error::EncodingError

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impl Display for LimitError

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impl Display for druid::piet::image_crate::error::ParameterError

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impl Display for UnsupportedError

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impl Display for cairo_matrix_t

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impl Display for druid::piet::cairo::Context

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impl Display for druid::piet::cairo::Device

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impl Display for Gradient

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impl Display for ImageSurface

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impl Display for LinearGradient

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impl Display for MappedImageSurface

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impl Display for Mesh

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impl Display for Path

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impl Display for Pattern

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impl Display for RadialGradient

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impl Display for RecordingSurface

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impl Display for Rectangle

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impl Display for RectangleInt

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impl Display for RectangleList

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impl Display for druid::piet::cairo::Region

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impl Display for SolidPattern

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impl Display for Surface

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impl Display for SurfacePattern

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impl Display for Version

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impl Display for XCBConnection

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impl Display for XCBDrawable

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impl Display for XCBPixmap

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impl Display for XCBRenderPictFormInfo

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impl Display for XCBScreen

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impl Display for XCBSurface

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impl Display for XCBVisualType

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impl Display for Binding

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impl Display for BindingFlags

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impl Display for BoolError

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impl Display for druid::piet::cairo::glib::Error

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impl Display for FormatSizeFlags

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impl Display for FutureWithTimeoutError

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impl Display for GString

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impl Display for GStringBuilder

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impl Display for IOCondition

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impl Display for KeyFileFlags

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impl Display for LogLevelFlags

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impl Display for OptionFlags

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impl Display for SignalFlags

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impl Display for SpawnFlags

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impl Display for Type

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impl Display for druid::piet::cairo::glib::Variant

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impl Display for VariantTy

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impl Display for VariantType

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impl Display for SignalType

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impl Display for GlibNoneError

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impl Display for ValueTypeMismatchError

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impl Display for VariantTypeMismatchError

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impl Display for AllocError

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impl Display for LayoutError

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impl Display for TryFromSliceError

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impl Display for druid::piet::cairo::glib::bitflags::_core::ascii::EscapeDefault

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impl Display for druid::piet::cairo::glib::bitflags::_core::cell::BorrowError

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impl Display for BorrowMutError

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impl Display for CharTryFromError

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impl Display for DecodeUtf16Error

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impl Display for druid::piet::cairo::glib::bitflags::_core::char::EscapeDebug

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impl Display for druid::piet::cairo::glib::bitflags::_core::char::EscapeDefault

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impl Display for druid::piet::cairo::glib::bitflags::_core::char::EscapeUnicode

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impl Display for ParseCharError

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impl Display for ToLowercase

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impl Display for ToUppercase

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impl Display for TryFromCharError

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impl Display for FromBytesUntilNulError

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impl Display for FromBytesWithNulError

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impl Display for AddrParseError

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impl Display for Ipv4Addr

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impl Display for Ipv6Addr

Write an Ipv6Addr, conforming to the canonical style described by RFC 5952.

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impl Display for SocketAddrV4

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impl Display for SocketAddrV6

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impl Display for NonZeroI8

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impl Display for NonZeroI16

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impl Display for NonZeroI32

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impl Display for NonZeroI64

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impl Display for NonZeroI128

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impl Display for NonZeroIsize

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impl Display for NonZeroU8

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impl Display for NonZeroU16

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impl Display for NonZeroU32

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impl Display for NonZeroU64

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impl Display for NonZeroU128

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impl Display for NonZeroUsize

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impl Display for druid::piet::cairo::glib::bitflags::_core::num::ParseFloatError

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impl Display for ParseIntError

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impl Display for TryFromIntError

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impl Display for Location<'_>

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impl Display for PanicInfo<'_>

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impl Display for ParseBoolError

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impl Display for Utf8Error

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impl Display for TryFromFloatSecsError

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impl Display for TryReserveError

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impl Display for FromVecWithNulError

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impl Display for IntoStringError

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impl Display for NulError

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impl Display for FromUtf8Error

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impl Display for FromUtf16Error

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impl Display for String

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impl Display for Backtrace

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impl Display for JoinPathsError

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impl Display for WriterPanicked

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impl Display for std::io::error::Error

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impl Display for std::path::Display<'_>

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impl Display for StripPrefixError

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impl Display for ExitStatus

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impl Display for ExitStatusError

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impl Display for RecvError

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impl Display for AccessError

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impl Display for SystemTimeError

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impl Display for anyhow::Error

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impl Display for CompressError

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impl Display for flate2::mem::DecompressError

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impl Display for ParserError

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impl Display for log::ParseLevelError

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impl Display for SetLoggerError

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impl Display for ParseRatioError

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impl Display for num_traits::ParseFloatError

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impl Display for StyleSheet<'_>

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impl Display for simplecss::TextPos

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impl Display for SetGlobalDefaultError

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impl Display for Field

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impl Display for FieldSet

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impl Display for tracing_core::metadata::Level

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impl Display for tracing_core::metadata::LevelFilter

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impl Display for tracing_core::metadata::ParseLevelError

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impl Display for ParseLevelFilterError

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impl Display for ParseError

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impl Display for Directive

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impl Display for BadName

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impl Display for EnvFilter

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impl Display for FromEnvError

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impl Display for tracing_subscriber::reload::Error

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impl Display for TryInitError

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impl Display for PathBbox

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impl Display for usvg::geom::Rect

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impl Display for ScreenRect

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impl Display for ScreenSize

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impl Display for usvg::geom::Size

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impl Display for rand_core::error::Error

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impl Display for Arguments<'_>

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impl Display for druid::piet::cairo::glib::bitflags::_core::fmt::Error

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impl Display for Aborted

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impl Display for AboutDialog

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impl Display for AccelFlags

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impl Display for AccelGroup

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impl Display for AccelLabel

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impl Display for Action

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impl Display for Action

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impl Display for ActionBar

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impl Display for ActionGroup

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impl Display for ActionMap

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impl Display for Actionable

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impl Display for Adjustment

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impl Display for Align

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impl Display for Alignment

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impl Display for AnchorHints

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impl Display for AppChooserButton

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impl Display for AppChooserDialog

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impl Display for AppChooserWidget

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impl Display for AppInfo

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impl Display for AppInfoCreateFlags

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impl Display for AppInfoMonitor

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impl Display for AppLaunchContext

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impl Display for AppLaunchContext

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impl Display for Application

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impl Display for Application

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impl Display for ApplicationCommandLine

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impl Display for ApplicationFlags

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impl Display for ApplicationInhibitFlags

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impl Display for ApplicationWindow

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impl Display for ArrowType

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impl Display for AskPasswordFlags

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impl Display for AspectFrame

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impl Display for Assistant

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impl Display for AssistantPageType

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impl Display for Ast

Print a display representation of this Ast.

This does not preserve any of the original whitespace formatting that may have originally been present in the concrete syntax from which this Ast was generated.

This implementation uses constant stack space and heap space proportional to the size of the Ast.

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