#[repr(C)]
pub struct Value(_);
Expand description
The superclass of all JavaScript values and objects.
Returns true if this value is the undefined value. See ECMA-262 4.3.10.
Returns true if this value is the null value. See ECMA-262 4.3.11.
Returns true if this value is either the null or the undefined value.
See ECMA-262 4.3.11. and 4.3.12
Returns true if this value is true.
This is not the same as BooleanValue()
. The latter performs a
conversion to boolean, i.e. the result of Boolean(value)
in JS, whereas
this checks value === true
.
Returns true if this value is false.
This is not the same as !BooleanValue()
. The latter performs a
conversion to boolean, i.e. the result of !Boolean(value)
in JS, whereas
this checks value === false
.
Returns true if this value is a symbol or a string.
This is equivalent to
typeof value === 'string' || typeof value === 'symbol'
in JS.
Returns true if this value is an instance of the String type.
See ECMA-262 8.4.
Returns true if this value is a symbol.
This is equivalent to typeof value === 'symbol'
in JS.
Returns true if this value is a function.
Returns true if this value is an array. Note that it will return false for
an Proxy for an array.
Returns true if this value is an object.
Returns true if this value is a bigint.
This is equivalent to typeof value === 'bigint'
in JS.
Returns true if this value is boolean.
This is equivalent to typeof value === 'boolean'
in JS.
Returns true if this value is a number.
Returns true if this value is an External
object.
Returns true if this value is a 32-bit signed integer.
Returns true if this value is a 32-bit unsigned integer.
Returns true if this value is a Date.
Returns true if this value is an Arguments object.
Returns true if this value is a BigInt object.
Returns true if this value is a Boolean object.
Returns true if this value is a Number object.
Returns true if this value is a String object.
Returns true if this value is a Symbol object.
Returns true if this value is a NativeError.
Returns true if this value is a RegExp.
Returns true if this value is an async function.
Returns true if this value is a Generator function.
Returns true if this value is a Promise.
Returns true if this value is a Map.
Returns true if this value is a Set.
Returns true if this value is a Map Iterator.
Returns true if this value is a Set Iterator.
Returns true if this value is a WeakMap.
Returns true if this value is a WeakSet.
Returns true if this value is an ArrayBuffer.
Returns true if this value is an ArrayBufferView.
Returns true if this value is one of TypedArrays.
Returns true if this value is an Uint8Array.
Returns true if this value is an Uint8ClampedArray.
Returns true if this value is an Int8Array.
Returns true if this value is an Uint16Array.
Returns true if this value is an Int16Array.
Returns true if this value is an Uint32Array.
Returns true if this value is an Int32Array.
Returns true if this value is a Float32Array.
Returns true if this value is a Float64Array.
Returns true if this value is a BigInt64Array.
Returns true if this value is a BigUint64Array.
Returns true if this value is a DataView.
Returns true if this value is a SharedArrayBuffer.
This is an experimental feature.
Returns true if this value is a JavaScript Proxy.
Returns true if this value is a WasmModuleObject.
Returns true if the value is a Module Namespace Object.
Implements the the abstract operation SameValueZero
, which is defined in
ECMA-262 6th edition § 7.2.10
(http://ecma-international.org/ecma-262/6.0/#sec-samevaluezero).
This operation is used to compare values for the purpose of insertion into
a Set
, or determining whether Map
keys are equivalent. Its semantics
are almost the same as strict_equals()
and same_value()
, with the
following important distinctions:
- It considers
NaN
equal to NaN
(unlike strict_equals()
).
- It considers
-0
equal to 0
(unlike same_value()
).
Convenience function not present in the original V8 API.
Perform the equivalent of Boolean(value) in JS. This can never fail.
Returns the V8 hash value for this value. The current implementation
uses a hidden property to store the identity hash on some object types.
The return value will never be 0. Also, it is not guaranteed to be
unique.
Returns true if this data is a Value
.
Returns true if this data is a Module
.
Returns true if this data is a Private
.
Returns true if this data is an ObjectTemplate
Returns true if this data is a FunctionTemplate.
Formats the value using the given formatter. Read more
The resulting type after dereferencing.
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
This method tests for !=
.
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
This method tests for !=
.
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
This method tests for !=
.
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
This method tests for !=
.
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
This method tests for !=
.
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
This method tests for !=
.
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
This method tests for !=
.
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
This method tests for !=
.
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
This method tests for !=
.
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
This method tests for !=
.
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
This method tests for !=
.
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
This method tests for !=
.
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
This method tests for !=
.
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
This method tests for !=
.
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
This method tests for !=
.
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
This method tests for !=
.
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
This method tests for !=
.
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
This method tests for !=
.
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
This method tests for !=
.
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
This method tests for !=
.
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
This method tests for !=
.
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
This method tests for !=
.
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
This method tests for !=
.
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
This method tests for !=
.
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
This method tests for !=
.
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
This method tests for !=
.
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
This method tests for !=
.
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
This method tests for !=
.
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
This method tests for !=
.
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
This method tests for !=
.
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
This method tests for !=
.
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
This method tests for !=
.
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
This method tests for !=
.
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
This method tests for !=
.
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
This method tests for !=
.
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
This method tests for !=
.
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
This method tests for !=
.
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
This method tests for !=
.
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
This method tests for !=
.
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
This method tests for !=
.
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
This method tests for !=
.
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
This method tests for !=
.
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
This method tests for !=
.
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
This method tests for !=
.
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
This method tests for !=
.
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
This method tests for !=
.
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
This method tests for !=
.
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
This method tests for !=
.
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
This method tests for !=
.
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
This method tests for !=
.
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
This method tests for !=
.
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
This method tests for !=
.
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
This method tests for !=
.
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
This method tests for !=
.
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
This method tests for !=
.
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
This method tests for !=
.
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
This method tests for !=
.
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
This method tests for !=
.
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
This method tests for !=
.
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
This method tests for !=
.
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
This method tests for !=
.
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
This method tests for !=
.
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
This method tests for !=
.
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
This method tests for !=
.
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
This method tests for !=
.
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
This method tests for !=
.
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
This method tests for !=
.
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
This method tests for !=
.
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
This method tests for !=
.
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
This method tests for !=
.
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
This method tests for !=
.
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
This method tests for !=
.
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
This method tests for !=
.
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
This method tests for !=
.
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
This method tests for !=
.
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
This method tests for !=
.
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
This method tests for !=
.
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
This method tests for !=
.
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
This method tests for !=
.
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
This method tests for !=
.
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
This method tests for !=
.
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
This method tests for !=
.
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
This method tests for !=
.
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
This method tests for !=
.
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
This method tests for !=
.
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
This method tests for !=
.
This method tests for self
and other
values to be equal, and is used
by ==
. Read more
This method tests for !=
.
Immutably borrows from an owned value. Read more
Mutably borrows from an owned value. Read more
The type returned in the event of a conversion error.
The type returned in the event of a conversion error.