RelationalOp

Enum RelationalOp 

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pub enum RelationalOp {
    Equal,
    NotEqual,
    StrictEqual,
    StrictNotEqual,
    GreaterThan,
    GreaterThanOrEqual,
    LessThan,
    LessThanOrEqual,
    In,
    InstanceOf,
}
Expand description

A relational operator compares its operands and returns a logical value based on whether the relation is true.

The operands can be numerical, string, logical, or object values. Strings are compared based on standard lexicographical ordering, using Unicode values. In most cases, if the two operands are not of the same type, JavaScript attempts to convert them to an appropriate type for the comparison. This behavior generally results in comparing the operands numerically. The sole exceptions to type conversion within comparisons involve the === and !== operators, which perform strict equality and inequality comparisons. These operators do not attempt to convert the operands to compatible types before checking equality.

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Variants§

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Equal

The equality operator converts the operands if they are not of the same type, then applies strict comparison.

Syntax: y == y

If both operands are objects, then JavaScript compares internal references which are equal when operands refer to the same object in memory.

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NotEqual

The inequality operator returns true if the operands are not equal.

Syntax: x != y

If the two operands are not of the same type, JavaScript attempts to convert the operands to an appropriate type for the comparison. If both operands are objects, then JavaScript compares internal references which are not equal when operands refer to different objects in memory.

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StrictEqual

The identity operator returns true if the operands are strictly equal with no type conversion.

Syntax: x === y

Returns true if the operands are equal and of the same type.

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StrictNotEqual

The non-identity operator returns true if the operands are not equal and/or not of the same type.

Syntax: x !== y

Returns true if the operands are of the same type but not equal, or are of different type.

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GreaterThan

The greater than operator returns true if the left operand is greater than the right operand.

Syntax: x > y

Returns true if the left operand is greater than the right operand.

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GreaterThanOrEqual

The greater than or equal operator returns true if the left operand is greater than or equal to the right operand.

Syntax: x >= y

Returns true if the left operand is greater than the right operand.

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LessThan

The less than operator returns true if the left operand is less than the right operand.

Syntax: x < y

Returns true if the left operand is less than the right operand.

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LessThanOrEqual

The less than or equal operator returns true if the left operand is less than or equal to the right operand.

Syntax: x <= y

Returns true if the left operand is less than or equal to the right operand.

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In

The in operator returns true if the specified property is in the specified object or its prototype chain.

Syntax: prop in object

Returns true the specified property is in the specified object or its prototype chain.

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InstanceOf

The instanceof operator returns true if the specified object is an instance of the right hand side object.

Syntax: obj instanceof Object

Returns true the prototype property of the right hand side constructor appears anywhere in the prototype chain of the object.

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Trait Implementations§

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impl<'arbitrary> Arbitrary<'arbitrary> for RelationalOp

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fn arbitrary(u: &mut Unstructured<'arbitrary>) -> Result<Self>

Generate an arbitrary value of Self from the given unstructured data. Read more
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fn arbitrary_take_rest(u: Unstructured<'arbitrary>) -> Result<Self>

Generate an arbitrary value of Self from the entirety of the given unstructured data. Read more
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fn size_hint(depth: usize) -> (usize, Option<usize>)

Get a size hint for how many bytes out of an Unstructured this type needs to construct itself. Read more
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fn try_size_hint( depth: usize, ) -> Result<(usize, Option<usize>), MaxRecursionReached>

Get a size hint for how many bytes out of an Unstructured this type needs to construct itself. Read more
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impl Clone for RelationalOp

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fn clone(&self) -> RelationalOp

Returns a duplicate 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 RelationalOp

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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<'de> Deserialize<'de> for RelationalOp

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

Deserialize this value from the given Serde deserializer. Read more
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impl Display for RelationalOp

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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 From<RelationalOp> for BinaryOp

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fn from(op: RelationalOp) -> Self

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

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

Tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl Serialize for RelationalOp

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

Serialize this value into the given Serde serializer. Read more
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impl Copy for RelationalOp

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impl Eq for RelationalOp

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impl StructuralPartialEq for RelationalOp

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<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. 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> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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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> 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> ToString for T
where T: Display + ?Sized,

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fn to_string(&self) -> String

Converts the given value to a String. Read more
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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> DeserializeOwned for T
where T: for<'de> Deserialize<'de>,