[−][src]Struct sixtyfps::ModelHandle
Properties of type array in the .60 language are represented as
an Option
of an Rc
of something implemented the Model
trait
Implementations
impl<T> ModelHandle<T>
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pub fn new(model: Rc<dyn Model<Data = T> + 'static>) -> ModelHandle<T>
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Create a new handle wrapping the given model
Methods from Deref<Target = Option<Rc<dyn Model<Data = T> + 'static>>>
#[must_use =
"if you intended to assert that this has a value, consider `.unwrap()` instead"]pub const fn is_some(&self) -> bool
1.0.0 (const: 1.48.0)[src]
Returns true
if the option is a Some
value.
Examples
let x: Option<u32> = Some(2); assert_eq!(x.is_some(), true); let x: Option<u32> = None; assert_eq!(x.is_some(), false);
#[must_use =
"if you intended to assert that this doesn't have a value, consider \
`.and_then(|| panic!(\"`Option` had a value when expected `None`\"))` instead"]pub const fn is_none(&self) -> bool
1.0.0 (const: 1.48.0)[src]
Returns true
if the option is a None
value.
Examples
let x: Option<u32> = Some(2); assert_eq!(x.is_none(), false); let x: Option<u32> = None; assert_eq!(x.is_none(), true);
#[must_use]pub fn contains<U>(&self, x: &U) -> bool where
U: PartialEq<T>,
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U: PartialEq<T>,
option_result_contains
)Returns true
if the option is a Some
value containing the given value.
Examples
#![feature(option_result_contains)] let x: Option<u32> = Some(2); assert_eq!(x.contains(&2), true); let x: Option<u32> = Some(3); assert_eq!(x.contains(&2), false); let x: Option<u32> = None; assert_eq!(x.contains(&2), false);
pub const fn as_ref(&self) -> Option<&T>
1.0.0 (const: 1.48.0)[src]
Converts from &Option<T>
to Option<&T>
.
Examples
Converts an Option<
String
>
into an Option<
usize
>
, preserving the original.
The map
method takes the self
argument by value, consuming the original,
so this technique uses as_ref
to first take an Option
to a reference
to the value inside the original.
let text: Option<String> = Some("Hello, world!".to_string()); // First, cast `Option<String>` to `Option<&String>` with `as_ref`, // then consume *that* with `map`, leaving `text` on the stack. let text_length: Option<usize> = text.as_ref().map(|s| s.len()); println!("still can print text: {:?}", text);
pub fn as_mut(&mut self) -> Option<&mut T>
1.0.0[src]
Converts from &mut Option<T>
to Option<&mut T>
.
Examples
let mut x = Some(2); match x.as_mut() { Some(v) => *v = 42, None => {}, } assert_eq!(x, Some(42));
pub fn as_pin_ref(self: Pin<&Option<T>>) -> Option<Pin<&T>>
1.33.0[src]
pub fn as_pin_mut(self: Pin<&mut Option<T>>) -> Option<Pin<&mut T>>
1.33.0[src]
pub fn insert(&mut self, value: T) -> &mut T
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🔬 This is a nightly-only experimental API. (option_insert
)
newly added
Inserts value
into the option then returns a mutable reference to it.
If the option already contains a value, the old value is dropped.
Example
#![feature(option_insert)] let mut opt = None; let val = opt.insert(1); assert_eq!(*val, 1); assert_eq!(opt.unwrap(), 1); let val = opt.insert(2); assert_eq!(*val, 2); *val = 3; assert_eq!(opt.unwrap(), 3);
pub const fn iter(&self) -> Iter<'_, T>
1.0.0[src]
Returns an iterator over the possibly contained value.
Examples
let x = Some(4); assert_eq!(x.iter().next(), Some(&4)); let x: Option<u32> = None; assert_eq!(x.iter().next(), None);
pub fn iter_mut(&mut self) -> IterMut<'_, T>
1.0.0[src]
Returns a mutable iterator over the possibly contained value.
Examples
let mut x = Some(4); match x.iter_mut().next() { Some(v) => *v = 42, None => {}, } assert_eq!(x, Some(42)); let mut x: Option<u32> = None; assert_eq!(x.iter_mut().next(), None);
pub fn get_or_insert(&mut self, value: T) -> &mut T
1.20.0[src]
Inserts value
into the option if it is None
, then
returns a mutable reference to the contained value.
Examples
let mut x = None; { let y: &mut u32 = x.get_or_insert(5); assert_eq!(y, &5); *y = 7; } assert_eq!(x, Some(7));
pub fn get_or_insert_with<F>(&mut self, f: F) -> &mut T where
F: FnOnce() -> T,
1.20.0[src]
F: FnOnce() -> T,
Inserts a value computed from f
into the option if it is None
,
then returns a mutable reference to the contained value.
Examples
let mut x = None; { let y: &mut u32 = x.get_or_insert_with(|| 5); assert_eq!(y, &5); *y = 7; } assert_eq!(x, Some(7));
pub fn take(&mut self) -> Option<T>
1.0.0[src]
Takes the value out of the option, leaving a None
in its place.
Examples
let mut x = Some(2); let y = x.take(); assert_eq!(x, None); assert_eq!(y, Some(2)); let mut x: Option<u32> = None; let y = x.take(); assert_eq!(x, None); assert_eq!(y, None);
pub fn replace(&mut self, value: T) -> Option<T>
1.31.0[src]
Replaces the actual value in the option by the value given in parameter,
returning the old value if present,
leaving a Some
in its place without deinitializing either one.
Examples
let mut x = Some(2); let old = x.replace(5); assert_eq!(x, Some(5)); assert_eq!(old, Some(2)); let mut x = None; let old = x.replace(3); assert_eq!(x, Some(3)); assert_eq!(old, None);
pub fn as_deref(&self) -> Option<&<T as Deref>::Target>
1.40.0[src]
Converts from Option<T>
(or &Option<T>
) to Option<&T::Target>
.
Leaves the original Option in-place, creating a new one with a reference
to the original one, additionally coercing the contents via Deref
.
Examples
let x: Option<String> = Some("hey".to_owned()); assert_eq!(x.as_deref(), Some("hey")); let x: Option<String> = None; assert_eq!(x.as_deref(), None);
pub fn as_deref_mut(&mut self) -> Option<&mut <T as Deref>::Target>
1.40.0[src]
Converts from Option<T>
(or &mut Option<T>
) to Option<&mut T::Target>
.
Leaves the original Option
in-place, creating a new one containing a mutable reference to
the inner type's Deref::Target
type.
Examples
let mut x: Option<String> = Some("hey".to_owned()); assert_eq!(x.as_deref_mut().map(|x| { x.make_ascii_uppercase(); x }), Some("HEY".to_owned().as_mut_str()));
Trait Implementations
impl<T> Clone for ModelHandle<T>
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pub fn clone(&self) -> ModelHandle<T>
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pub fn clone_from(&mut self, source: &Self)
1.0.0[src]
impl<T> Default for ModelHandle<T>
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pub fn default() -> ModelHandle<T>
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impl<T> Deref for ModelHandle<T>
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type Target = Option<Rc<dyn Model<Data = T> + 'static>>
The resulting type after dereferencing.
pub fn deref(&self) -> &<ModelHandle<T> as Deref>::Target
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impl<T> DerefMut for ModelHandle<T>
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pub fn deref_mut(&mut self) -> &mut <ModelHandle<T> as Deref>::Target
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impl<T> From<ModelHandle<T>> for Option<Rc<dyn Model<Data = T> + 'static>>
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impl<T> From<Option<Rc<dyn Model<Data = T> + 'static>>> for ModelHandle<T>
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impl<T> From<Rc<dyn Model<Data = T> + 'static>> for ModelHandle<T>
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pub fn from(x: Rc<dyn Model<Data = T> + 'static>) -> ModelHandle<T>
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impl<T> Model for ModelHandle<T>
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type Data = T
The model data: A model is a set of row and each row has this data
pub fn row_count(&self) -> usize
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pub fn row_data(&self, row: usize) -> <ModelHandle<T> as Model>::Data
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pub fn attach_peer(&self, peer: ModelPeer)
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pub fn set_row_data(&self, _row: usize, _data: Self::Data)
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pub fn iter(&'a self) -> ModelIterator<'a, Self::Data>ⓘNotable traits for ModelIterator<'a, T>
impl<'a, T> Iterator for ModelIterator<'a, T> type Item = T;
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Notable traits for ModelIterator<'a, T>
impl<'a, T> Iterator for ModelIterator<'a, T> type Item = T;
impl<T> PartialEq<ModelHandle<T>> for ModelHandle<T>
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Auto Trait Implementations
impl<T> !RefUnwindSafe for ModelHandle<T>
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impl<T> !Send for ModelHandle<T>
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impl<T> !Sync for ModelHandle<T>
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impl<T> Unpin for ModelHandle<T>
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impl<T> !UnwindSafe for ModelHandle<T>
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Blanket Implementations
impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,
impl<T> Borrow<T> for T where
T: ?Sized,
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T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
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T: ?Sized,
pub fn borrow_mut(&mut self) -> &mut T
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impl<T> From<T> for T
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impl<T, U> Into<U> for T where
U: From<T>,
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U: From<T>,
impl<T> ToOwned for T where
T: Clone,
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T: Clone,
type Owned = T
The resulting type after obtaining ownership.
pub fn to_owned(&self) -> T
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pub fn clone_into(&self, target: &mut T)
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impl<T, U> TryFrom<U> for T where
U: Into<T>,
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U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
pub fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
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U: TryFrom<T>,