Struct bevy::ui::GridPlacement

pub struct GridPlacement { /* private fields */ }
Expand description

Represents the position of a grid item in a single axis.

There are 3 fields which may be set:

  • start: which grid line the item should start at
  • end: which grid line the item should end at
  • span: how many tracks the item should span

The default span is 1. If neither start or end is set then the item will be placed automatically.

Generally, at most two fields should be set. If all three fields are specified then span will be ignored. If end specifies an earlier grid line than start then end will be ignored and the item will have a span of 1.

https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_Grid_Layout/Line-based_Placement_with_CSS_Grid

Implementations§

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impl GridPlacement

pub const DEFAULT: GridPlacement = _

pub fn auto() -> GridPlacement

Place the grid item automatically (letting the span default to 1).

pub fn span(span: u16) -> GridPlacement

Place the grid item automatically, specifying how many tracks it should span.

§Panics

Panics if span is 0.

Examples found in repository?
examples/ui/grid.rs (line 56)
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fn spawn_layout(mut commands: Commands, asset_server: Res<AssetServer>) {
    let font = asset_server.load("fonts/FiraSans-Bold.ttf");
    commands.spawn(Camera2dBundle::default());

    // Top-level grid (app frame)
    commands
        .spawn(NodeBundle {
            style: Style {
                // Use the CSS Grid algorithm for laying out this node
                display: Display::Grid,
                // Make node fill the entirety of its parent (in this case the window)
                width: Val::Percent(100.0),
                height: Val::Percent(100.0),
                // Set the grid to have 2 columns with sizes [min-content, minmax(0, 1fr)]
                //   - The first column will size to the size of its contents
                //   - The second column will take up the remaining available space
                grid_template_columns: vec![GridTrack::min_content(), GridTrack::flex(1.0)],
                // Set the grid to have 3 rows with sizes [auto, minmax(0, 1fr), 20px]
                //  - The first row will size to the size of its contents
                //  - The second row take up remaining available space (after rows 1 and 3 have both been sized)
                //  - The third row will be exactly 20px high
                grid_template_rows: vec![
                    GridTrack::auto(),
                    GridTrack::flex(1.0),
                    GridTrack::px(20.),
                ],
                ..default()
            },
            background_color: BackgroundColor(Color::WHITE),
            ..default()
        })
        .with_children(|builder| {
            // Header
            builder
                .spawn(NodeBundle {
                    style: Style {
                        display: Display::Grid,
                        // Make this node span two grid columns so that it takes up the entire top tow
                        grid_column: GridPlacement::span(2),
                        padding: UiRect::all(Val::Px(6.0)),
                        ..default()
                    },
                    ..default()
                })
                .with_children(|builder| {
                    spawn_nested_text_bundle(builder, font.clone(), "Bevy CSS Grid Layout Example");
                });

            // Main content grid (auto placed in row 2, column 1)
            builder
                .spawn(NodeBundle {
                    style: Style {
                        // Make the height of the node fill its parent
                        height: Val::Percent(100.0),
                        // Make the grid have a 1:1 aspect ratio meaning it will scale as an exact square
                        // As the height is set explicitly, this means the width will adjust to match the height
                        aspect_ratio: Some(1.0),
                        // Use grid layout for this node
                        display: Display::Grid,
                        // Add 24px of padding around the grid
                        padding: UiRect::all(Val::Px(24.0)),
                        // Set the grid to have 4 columns all with sizes minmax(0, 1fr)
                        // This creates 4 exactly evenly sized columns
                        grid_template_columns: RepeatedGridTrack::flex(4, 1.0),
                        // Set the grid to have 4 rows all with sizes minmax(0, 1fr)
                        // This creates 4 exactly evenly sized rows
                        grid_template_rows: RepeatedGridTrack::flex(4, 1.0),
                        // Set a 12px gap/gutter between rows and columns
                        row_gap: Val::Px(12.0),
                        column_gap: Val::Px(12.0),
                        ..default()
                    },
                    background_color: BackgroundColor(Color::srgb(0.25, 0.25, 0.25)),
                    ..default()
                })
                .with_children(|builder| {
                    // Note there is no need to specify the position for each grid item. Grid items that are
                    // not given an explicit position will be automatically positioned into the next available
                    // grid cell. The order in which this is performed can be controlled using the grid_auto_flow
                    // style property.

                    item_rect(builder, ORANGE);
                    item_rect(builder, BISQUE);
                    item_rect(builder, BLUE);
                    item_rect(builder, CRIMSON);
                    item_rect(builder, AQUA);
                    item_rect(builder, ORANGE_RED);
                    item_rect(builder, DARK_GREEN);
                    item_rect(builder, FUCHSIA);
                    item_rect(builder, TEAL);
                    item_rect(builder, ALICE_BLUE);
                    item_rect(builder, CRIMSON);
                    item_rect(builder, ANTIQUE_WHITE);
                    item_rect(builder, YELLOW);
                    item_rect(builder, DEEP_PINK);
                    item_rect(builder, YELLOW_GREEN);
                    item_rect(builder, SALMON);
                });

            // Right side bar (auto placed in row 2, column 2)
            builder
                .spawn(NodeBundle {
                    style: Style {
                        display: Display::Grid,
                        // Align content towards the start (top) in the vertical axis
                        align_items: AlignItems::Start,
                        // Align content towards the center in the horizontal axis
                        justify_items: JustifyItems::Center,
                        // Add 10px padding
                        padding: UiRect::all(Val::Px(10.)),
                        // Add an fr track to take up all the available space at the bottom of the column so that the text nodes
                        // can be top-aligned. Normally you'd use flexbox for this, but this is the CSS Grid example so we're using grid.
                        grid_template_rows: vec![GridTrack::auto(), GridTrack::auto(), GridTrack::fr(1.0)],
                        // Add a 10px gap between rows
                        row_gap: Val::Px(10.),
                        ..default()
                    },
                    background_color: BackgroundColor(BLACK.into()),
                    ..default()
                })
                .with_children(|builder| {
                    builder.spawn(TextBundle::from_section(
                        "Sidebar",
                        TextStyle {
                            font: font.clone(),
                            font_size: 24.0,
                            ..default()
                        },
                    ));
                    builder.spawn(TextBundle::from_section(
                        "A paragraph of text which ought to wrap nicely. A paragraph of text which ought to wrap nicely. A paragraph of text which ought to wrap nicely. A paragraph of text which ought to wrap nicely. A paragraph of text which ought to wrap nicely. A paragraph of text which ought to wrap nicely. A paragraph of text which ought to wrap nicely.",
                        TextStyle {
                            font: font.clone(),
                            font_size: 16.0,
                            ..default()
                        },
                    ));
                    builder.spawn(NodeBundle::default());
                });

            // Footer / status bar
            builder.spawn(NodeBundle {
                style: Style {
                    // Make this node span two grid column so that it takes up the entire bottom row
                    grid_column: GridPlacement::span(2),
                    ..default()
                },
                background_color: BackgroundColor(WHITE.into()),
                ..default()
            });

            // Modal (absolutely positioned on top of content - currently hidden: to view it, change its visibility)
            builder.spawn(NodeBundle {
                visibility: Visibility::Hidden,
                style: Style {
                    position_type: PositionType::Absolute,
                    margin: UiRect {
                        top: Val::Px(100.),
                        bottom: Val::Auto,
                        left: Val::Auto,
                        right: Val::Auto,
                    },
                    width: Val::Percent(60.),
                    height: Val::Px(300.),
                    max_width: Val::Px(600.),
                    ..default()
                },
                background_color: BackgroundColor(Color::WHITE.with_alpha(0.8)),
                ..default()
            });
        });
}

pub fn start(start: i16) -> GridPlacement

Place the grid item specifying the start grid line (letting the span default to 1).

§Panics

Panics if start is 0.

pub fn end(end: i16) -> GridPlacement

Place the grid item specifying the end grid line (letting the span default to 1).

§Panics

Panics if end is 0.

pub fn start_span(start: i16, span: u16) -> GridPlacement

Place the grid item specifying the start grid line and how many tracks it should span.

§Panics

Panics if start or span is 0.

pub fn start_end(start: i16, end: i16) -> GridPlacement

Place the grid item specifying start and end grid lines (span will be inferred)

§Panics

Panics if start or end is 0.

pub fn end_span(end: i16, span: u16) -> GridPlacement

Place the grid item specifying the end grid line and how many tracks it should span.

§Panics

Panics if end or span is 0.

pub fn set_start(self, start: i16) -> GridPlacement

Mutate the item, setting the start grid line

§Panics

Panics if start is 0.

pub fn set_end(self, end: i16) -> GridPlacement

Mutate the item, setting the end grid line

§Panics

Panics if end is 0.

pub fn set_span(self, span: u16) -> GridPlacement

Mutate the item, setting the number of tracks the item should span

§Panics

Panics if span is 0.

pub fn get_start(self) -> Option<i16>

Returns the grid line at which the item should start, or None if not set.

pub fn get_end(self) -> Option<i16>

Returns the grid line at which the item should end, or None if not set.

pub fn get_span(self) -> Option<u16>

Returns span for this grid item, or None if not set.

Trait Implementations§

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impl Clone for GridPlacement

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fn clone(&self) -> GridPlacement

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for GridPlacement

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fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter. Read more
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impl Default for GridPlacement

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fn default() -> GridPlacement

Returns the “default value” for a type. Read more
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impl<'de> Deserialize<'de> for GridPlacement

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fn deserialize<__D>( __deserializer: __D, ) -> Result<GridPlacement, <__D as Deserializer<'de>>::Error>
where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer. Read more
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impl From<GridPlacement> for Line<GenericGridPlacement<GridLine>>

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fn from(value: GridPlacement) -> Line<GenericGridPlacement<GridLine>>

Converts to this type from the input type.
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impl FromReflect for GridPlacement
where GridPlacement: Any + Send + Sync, Option<NonZero<i16>>: FromReflect + TypePath + RegisterForReflection, Option<NonZero<u16>>: FromReflect + TypePath + RegisterForReflection,

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fn from_reflect(reflect: &(dyn Reflect + 'static)) -> Option<GridPlacement>

Constructs a concrete instance of Self from a reflected value.
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fn take_from_reflect( reflect: Box<dyn Reflect>, ) -> Result<Self, Box<dyn Reflect>>

Attempts to downcast the given value to Self using, constructing the value using from_reflect if that fails. Read more
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impl GetTypeRegistration for GridPlacement
where GridPlacement: Any + Send + Sync, Option<NonZero<i16>>: FromReflect + TypePath + RegisterForReflection, Option<NonZero<u16>>: FromReflect + TypePath + RegisterForReflection,

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fn get_type_registration() -> TypeRegistration

Returns the default TypeRegistration for this type.
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fn register_type_dependencies(registry: &mut TypeRegistry)

Registers other types needed by this type. Read more
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impl PartialEq for GridPlacement

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fn eq(&self, other: &GridPlacement) -> bool

This method tests for self and other values to be equal, and is used by ==.
1.0.0 · source§

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl Reflect for GridPlacement
where GridPlacement: Any + Send + Sync, Option<NonZero<i16>>: FromReflect + TypePath + RegisterForReflection, Option<NonZero<u16>>: FromReflect + TypePath + RegisterForReflection,

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fn get_represented_type_info(&self) -> Option<&'static TypeInfo>

Returns the TypeInfo of the type represented by this value. Read more
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fn into_any(self: Box<GridPlacement>) -> Box<dyn Any>

Returns the value as a Box<dyn Any>.
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fn as_any(&self) -> &(dyn Any + 'static)

Returns the value as a &dyn Any.
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fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)

Returns the value as a &mut dyn Any.
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fn into_reflect(self: Box<GridPlacement>) -> Box<dyn Reflect>

Casts this type to a boxed reflected value.
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fn as_reflect(&self) -> &(dyn Reflect + 'static)

Casts this type to a reflected value.
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fn as_reflect_mut(&mut self) -> &mut (dyn Reflect + 'static)

Casts this type to a mutable reflected value.
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fn clone_value(&self) -> Box<dyn Reflect>

Clones the value as a Reflect trait object. Read more
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fn set(&mut self, value: Box<dyn Reflect>) -> Result<(), Box<dyn Reflect>>

Performs a type-checked assignment of a reflected value to this value. Read more
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fn try_apply( &mut self, value: &(dyn Reflect + 'static), ) -> Result<(), ApplyError>

Tries to apply a reflected value to this value. Read more
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fn reflect_kind(&self) -> ReflectKind

Returns a zero-sized enumeration of “kinds” of type. Read more
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fn reflect_ref(&self) -> ReflectRef<'_>

Returns an immutable enumeration of “kinds” of type. Read more
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fn reflect_mut(&mut self) -> ReflectMut<'_>

Returns a mutable enumeration of “kinds” of type. Read more
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fn reflect_owned(self: Box<GridPlacement>) -> ReflectOwned

Returns an owned enumeration of “kinds” of type. Read more
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fn reflect_partial_eq(&self, value: &(dyn Reflect + 'static)) -> Option<bool>

Returns a “partial equality” comparison result. Read more
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fn apply(&mut self, value: &(dyn Reflect + 'static))

Applies a reflected value to this value. Read more
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Returns a hash of the value (which includes the type). Read more
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fn debug(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Debug formatter for the value. Read more
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Returns a serializable version of the value. Read more
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fn is_dynamic(&self) -> bool

Indicates whether or not this type is a dynamic type. Read more
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impl Serialize for GridPlacement

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fn serialize<__S>( &self, __serializer: __S, ) -> Result<<__S as Serializer>::Ok, <__S as Serializer>::Error>
where __S: Serializer,

Serialize this value into the given Serde serializer. Read more
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impl Struct for GridPlacement
where GridPlacement: Any + Send + Sync, Option<NonZero<i16>>: FromReflect + TypePath + RegisterForReflection, Option<NonZero<u16>>: FromReflect + TypePath + RegisterForReflection,

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fn field(&self, name: &str) -> Option<&(dyn Reflect + 'static)>

Returns a reference to the value of the field named name as a &dyn Reflect.
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Returns a mutable reference to the value of the field named name as a &mut dyn Reflect.
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fn field_at(&self, index: usize) -> Option<&(dyn Reflect + 'static)>

Returns a reference to the value of the field with index index as a &dyn Reflect.
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fn field_at_mut(&mut self, index: usize) -> Option<&mut (dyn Reflect + 'static)>

Returns a mutable reference to the value of the field with index index as a &mut dyn Reflect.
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fn name_at(&self, index: usize) -> Option<&str>

Returns the name of the field with index index.
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fn field_len(&self) -> usize

Returns the number of fields in the struct.
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fn iter_fields(&self) -> FieldIter<'_>

Returns an iterator over the values of the reflectable fields for this struct.
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fn clone_dynamic(&self) -> DynamicStruct

Clones the struct into a DynamicStruct.
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impl TypePath for GridPlacement

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fn type_path() -> &'static str

Returns the fully qualified path of the underlying type. Read more
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fn short_type_path() -> &'static str

Returns a short, pretty-print enabled path to the type. Read more
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Returns the name of the type, or None if it is anonymous. Read more
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Returns the name of the crate the type is in, or None if it is anonymous. Read more
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fn module_path() -> Option<&'static str>

Returns the path to the module the type is in, or None if it is anonymous. Read more
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impl Typed for GridPlacement
where GridPlacement: Any + Send + Sync, Option<NonZero<i16>>: FromReflect + TypePath + RegisterForReflection, Option<NonZero<u16>>: FromReflect + TypePath + RegisterForReflection,

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fn type_info() -> &'static TypeInfo

Returns the compile-time info for the underlying type.
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impl Copy for GridPlacement

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impl Eq for GridPlacement

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impl StructuralPartialEq for GridPlacement

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where T: 'static + ?Sized,

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Gets the TypeId of self. Read more
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where U: ShaderType, &'a T: for<'a> Into<U>,

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Return the T ShaderType for self. When used in AsBindGroup derives, it is safe to assume that all images in self exist.
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Convert &Trait (where Trait: Downcast) to &Any. This is needed since Rust cannot generate &Any’s vtable from &Trait’s.
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fn do_erased_serialize( &self, serializer: &mut dyn Serializer, ) -> Result<(), ErrorImpl>

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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> ToSample<U> for T
where U: FromSample<T>,

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fn to_sample_(self) -> U

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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<T> TypeData for T
where T: 'static + Send + Sync + Clone,

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fn clone_type_data(&self) -> Box<dyn TypeData>

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impl<T> Upcast<T> for T

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fn upcast(&self) -> Option<&T>

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impl<V, T> VZip<V> for T
where V: MultiLane<T>,

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fn vzip(self) -> V

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impl<T> WithSubscriber for T

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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more
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fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more
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impl<T> ConditionalSend for T
where T: Send,

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impl<T> DeserializeOwned for T
where T: for<'de> Deserialize<'de>,

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impl<S, T> Duplex<S> for T
where T: FromSample<S> + ToSample<S>,

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impl<T> Settings for T
where T: 'static + Send + Sync,

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impl<T> WasmNotSend for T
where T: Send,

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impl<T> WasmNotSendSync for T
where T: WasmNotSend + WasmNotSync,

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impl<T> WasmNotSync for T
where T: Sync,