Struct ValueFunc<TResult>

Represents a pointer to parameterless method with return type.

Implements
ICallable<Func<TResult>>
IConvertible<Func<TResult>>
Inherited Members
Namespace: DotNext
Assembly: DotNext.dll
Syntax
public struct ValueFunc<TResult> : IValueDelegate<Func<TResult>>, ICallable<Func<TResult>>, ICallable, IConvertible<Func<TResult>>, ISupplier<Func<TResult>>, IEquatable<ValueFunc<TResult>>, ISupplier<TResult>
Type Parameters
Name Description
TResult

The type of the return value of the method that this pointer encapsulates.
Remarks

This method pointer is intended to call managed methods only.

Constructors

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ValueFunc(Func<TResult>, Boolean)

Initializes a new pointer based on extracted pointer from the delegate.

Declaration
public ValueFunc(Func<TResult> func, bool wrap = false)
Parameters
Type Name Description
Func<TResult> func

The delegate representing method.
Boolean wrap

true to wrap func into this delegate; false to extract method pointer without holding reference to the passed delegate.
Remarks

You can use this constructor to create value delegate once and cache it using static readonly field for subsequent calls.

Exceptions
Type Condition
ArgumentNullException

func is null.
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ValueFunc(MethodInfo)

Initializes a new pointer to the method.

Declaration
public ValueFunc(MethodInfo method)
Parameters
Type Name Description
MethodInfo method

The method to convert into pointer.
Remarks

This constructor causes heap allocations because Reflection is needed to check compatibility of method's signature with the delegate type.

Exceptions
Type Condition
ArgumentNullException

method is null.
ArgumentException

Signature of method doesn't match to this pointer type.

Properties

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Activator

Returns activator for type TResult in the form of typed method pointer.

Declaration
public static ValueFunc<TResult> Activator { get; }
Property Value
Type Description
ValueFunc<TResult>
Remarks

Actual type TResult should be a value type or have public parameterless constructor.

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DefaultValueProvider

Obtains pointer to the method that returns null if TResult is reference type or initialized value type if TResult is value type.

Declaration
public static ValueFunc<TResult> DefaultValueProvider { get; }
Property Value
Type Description
ValueFunc<TResult>
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IsEmpty

Indicates that this delegate doesn't refer to any method.

Declaration
public bool IsEmpty { get; }
Property Value
Type Description
Boolean
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Target

Gets the object on which the current pointer invokes the method.

Declaration
public object Target { get; }
Property Value
Type Description
Object

Methods

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Equals(ValueFunc<TResult>)

Determines whether this object points to the same method as other object.

Declaration
public bool Equals(ValueFunc<TResult> other)
Parameters
Type Name Description
ValueFunc<TResult> other

The pointer to compare.
Returns
Type Description
Boolean

true if both pointers represent the same method; otherwise, false.
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Equals(Object)

Determines whether this object points to the same method as other object.

Declaration
public override bool Equals(object other)
Parameters
Type Name Description
Object other

The object implementing ICallable<TDelegate> to compare.
Returns
Type Description
Boolean

true if both pointers represent the same method; otherwise, false.
Overrides
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GetHashCode()

Computes hash code of this pointer.

Declaration
public override int GetHashCode()
Returns
Type Description
Int32

The hash code of this pointer.
Overrides
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Invoke()

Invokes method by pointer.

Declaration
public TResult Invoke()
Returns
Type Description
TResult

The result of method invocation.
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ToDelegate()

Converts this pointer into Func<TResult>.

Declaration
public Func<TResult> ToDelegate()
Returns
Type Description
Func<TResult>

The delegate created from this method pointer; or null if this pointer is zero.
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ToString()

Obtains pointer value in HEX format.

Declaration
public override string ToString()
Returns
Type Description
String

The address represented by pointer.
Overrides

Operators

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Equality(ValueFunc<TResult>, ValueFunc<TResult>)

Determines whether the pointers represent the same method.

Declaration
public static bool operator ==(in ValueFunc<TResult> first, in ValueFunc<TResult> second)
Parameters
Type Name Description
ValueFunc<TResult> first

The first pointer to compare.
ValueFunc<TResult> second

The second pointer to compare.
Returns
Type Description
Boolean

true if both pointers represent the same method; otherwise, false.
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Explicit(ValueFunc<TResult> to Func<TResult>)

Converts this pointer into Func<TResult>.

Declaration
public static explicit operator Func<TResult>(in ValueFunc<TResult> pointer)
Parameters
Type Name Description
ValueFunc<TResult> pointer

The pointer to convert.
Returns
Type Description
Func<TResult>

The delegate created from this method pointer.
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Inequality(ValueFunc<TResult>, ValueFunc<TResult>)

Determines whether the pointers represent different methods.

Declaration
public static bool operator !=(in ValueFunc<TResult> first, in ValueFunc<TResult> second)
Parameters
Type Name Description
ValueFunc<TResult> first

The first pointer to compare.
ValueFunc<TResult> second

The second pointer to compare.
Returns
Type Description
Boolean

true if both pointers represent different methods; otherwise, false.

Explicit Interface Implementations

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ICallable.DynamicInvoke(Object[])

Declaration
object ICallable.DynamicInvoke(params object[] args)
Parameters
Type Name Description
Object[] args
Returns
Type Description
Object

Implements

Extension Methods