DoubleValue

open class DoubleValue : DataValue, @unchecked Sendable

DataValue subclass that wraps a value of type double.

  • Wrapped zero value.

    Declaration

    Swift

    public static let zero: DoubleValue

  • Compare two wrapped values for ordering.

    Declaration

    Swift

    open class func compare(_ left: DoubleValue, _ right: DoubleValue) -> Int

    Parameters

    left

    First object for comparison.
    right

    Second object for comparison.

    Return Value

    -1 if left.value < right.value, 0 if left.value == right.value, or 1 if left.value > right.value.

  • Declaration

    Swift

    override open func copyMutable() -> DataValue

    Return Value

    A clone of this value if it (together with all value subcomponents) is possibly mutable, or return self value if it (together with all value subcomponents) is definitely immutable. The resulting value might share mutable metadata with this query.

  • The type BasicType.DOUBLE.

    Declaration

    Swift

    override open var dataType: DataType { get }

  • Compare two wrapped values for equality.

    Declaration

    Swift

    open class func equal(_ left: DoubleValue?, _ right: DoubleValue?) -> Bool

    Parameters

    left

    First object for comparison.
    right

    Second object for comparison.

    Return Value

    true if left.value == right.value or if both arguments are nil, otherwise false.

  • Declaration

    Swift

    override open func equals(_ other: AnyObject?) -> Bool

    Parameters

    other

    The value to compare with.

    Return Value

    true if this object is equal to value.

  • Hash the wrapped value to a number.

    Declaration

    Swift

    override open func hashCode() -> Int

    Return Value

    Any value in the range of type int.

  • Wrap a double value as an object.

    Declaration

    Swift

    open class func of(_ value: Double) -> DoubleValue

    Parameters

    value

    Value to be wrapped.

    Return Value

    The wrapped value.

  • Wrap a double value as an object.

    Declaration

    Swift

    open class func of(_ value: String) -> DoubleValue?

    Parameters

    value

    Value to be wrapped (in string form, which will be returned if toString is called).

    Return Value

    The wrapped value, or null if the string form is not a valid number.

  • Wrap a nullable double value as an object.

    Declaration

    Swift

    open class func of(optional value: Double?) -> DoubleValue?

    Parameters

    value

    Value to be wrapped.

    Return Value

    The wrapped value.

  • Convert a wrapped double value to a nullable double.

    Throws

    CastException if value is not a wrapped double or nil.

    Declaration

    Swift

    open class func optional(_ value: AnyObject?) -> Double?

    Parameters

    value

    The wrapped value.

    Return Value

    A nullable double.

  • Convert this data value to a string. If the dataType is defined by XML Schema Part 2: Datatypes, then the corresponding lexical format is used. JSON format is used for structured values (arrays and objects).

    Declaration

    Swift

    override open func toString() -> String

    Return Value

    Lexical representation of this data value.

  • Declaration

    Swift

    open func toString3() -> String

    Return Value

    “NaN”, “INF”, “-INF”, or this.toString() for regular numbers.

  • Data type code of the wrapped value, equivalent to dataType.code.

    Declaration

    Swift

    override open var typeCode: Int { get }

  • Convert a wrapped double value to a double.

    Throws

    CastException if value is not a wrapped double.

    Declaration

    Swift

    open class func unwrap(_ value: AnyObject?) -> Double

    Parameters

    value

    The wrapped value.

    Return Value

    A double.

  • The wrapped value.

    Declaration

    Swift

    @inline(__always)
public final var value: Double { get }