System.Bindings.EvalProtocol.IPlaceholder
Delphi
IPlaceholder = interface
C++
__interface INTERFACE_UUID("{4F76D2FA-BED9-476B-AA29-B6399F234DA1}") IPlaceholder : public System::IInterface
Properties
Type | Visibility | Source | Unit | Parent |
---|---|---|---|---|
interface class |
public | System.Bindings.EvalProtocol.pas System.Bindings.EvalProtocol.hpp |
System.Bindings.EvalProtocol | System.Bindings.EvalProtocol |
Description
Defines a wrapper that is considered a placeholder when it does not wrap around a physical value.
IPlaceholder is an interface that defines a placeholder.
A wrapper is considered to be a placeholder when it does not wrap around a physical value, but it is present there as a placeholder for when the future value is created at evaluation time and to which the wrapper is then attached. All the placeholders needed for an expression are created at compilation time.