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ArgIntoBool

rustpython_vm::function

Struct ArgIntoBool 

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

A Python bool-like object.

ArgIntoBool implements FromArgs so that a built-in function can accept any object that can be transformed into a boolean.

By default an object is considered true unless its class defines either a __bool__() method that returns False or a __len__() method that returns zero, when called with the object.

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impl ArgIntoBool

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pub const TRUE: Self

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pub const FALSE: Self

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pub fn into_bool(self) -> bool

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pub const fn py_default(&self) -> DefaultRepr

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impl Debug for ArgIntoBool

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

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

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fn default() -> Self

Returns the “default value” for a type. Read more
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impl Eq for ArgIntoBool

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impl From<ArgIntoBool> for bool

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fn from(arg: ArgIntoBool) -> Self

Converts to this type from the input type.
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impl PartialEq for ArgIntoBool

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

Equality operator ==. Read more
1.0.0 (const: unstable) · Source§

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

Inequality operator !=. Read more
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impl StructuralPartialEq for ArgIntoBool

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impl TryFromObject for ArgIntoBool

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fn try_from_object(vm: &VirtualMachine, obj: PyObjectRef) -> PyResult<Self>

Attempt to convert a Python object to a value of this type.

Auto Trait Implementations§

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<ST, DT> CastableFrom<ST, Initialized, Initialized> for DT
where ST: ?Sized, DT: ?Sized,

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impl<ST, DT> CastableFrom<ST, Uninit, Uninit> for DT
where ST: ?Sized, DT: ?Sized,

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impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

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fn equivalent(&self, key: &K) -> bool

Checks if this value is equivalent to the given key. Read more
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impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

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fn equivalent(&self, key: &K) -> bool

Checks if this value is equivalent to the given key. Read more
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impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

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fn equivalent(&self, key: &K) -> bool

Compare self to key and return true if they are equal.
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impl<T> ErasedDestructor for T
where T: 'static,

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

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fn exact_from(value: T) -> U

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impl<T, U> ExactInto<U> for T
where U: ExactFrom<T>,

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fn exact_into(self) -> U

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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> FromArgOptional for T
where T: TryFromObject,

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type Inner = T

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fn from_inner(x: T) -> T

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impl<T> FromArgs for T
where T: TryFromObject,

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fn arity() -> RangeInclusive<usize> ⓘ

The range of positional arguments permitted by the function signature. Read more
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fn from_args( vm: &VirtualMachine, args: &mut FuncArgs, ) -> Result<T, ArgumentError>

Extracts this item from the next argument(s).
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const PARAMS: Option<&'static [Param]> = None

Parameters this type contributes to a text signature. Read more
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impl<T> Helper for T

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impl<T, U> ImaginaryInto<U> for T
where U: ImaginaryFrom<T>,

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fn imaginary_into(self) -> U

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

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> IntoEither for T

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fn into_either(self, into_left: bool) -> Either<Self, Self> ⓘ

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self> ⓘ
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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impl<T, U> OverflowingInto<U> for T
where U: OverflowingFrom<T>,

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fn overflowing_into(self) -> (U, bool)

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impl<T> PrimitiveIntRandomBounds for T

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impl<T> PrimitiveSignedRandomBounds for T

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impl<T> PyThreadingConstraint for T

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impl<T> Read<Exclusive, BecauseExclusive> for T
where T: ?Sized,

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impl<T, U> RoundingInto<U> for T
where U: RoundingFrom<T>,

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fn rounding_into(self, rm: RoundingMode) -> (U, Ordering)

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impl<T, U> SaturatingInto<U> for T
where U: SaturatingFrom<T>,

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fn saturating_into(self) -> U

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impl<T> ToDebugString for T
where T: Debug,

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fn to_debug_string(&self) -> String

Returns the String produced by Ts Debug implementation.

§Examples
use malachite_base::strings::ToDebugString;

assert_eq!([1, 2, 3].to_debug_string(), "[1, 2, 3]");
assert_eq!(
    [vec![2, 3], vec![], vec![4]].to_debug_string(),
    "[[2, 3], [], [4]]"
);
assert_eq!(Some(5).to_debug_string(), "Some(5)");
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = !

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

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, U> WrappingInto<U> for T
where U: WrappingFrom<T>,

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fn wrapping_into(self) -> U