14.8.5 Digital, shut, bypass, and conceptual accessors

When an event declaration comes with a fixed modifier, the big event is said to-be a fixed feel. When zero fixed modifier can be obtained, the event is alleged getting a situation experience.

A fixed skills is not of the a particular including, and is also an amass-date error to mention to this about accessors out of an effective static skills.

A case enjoy is regarding the a given illustration of a good group, and that for example should be utilized because (§eleven.7.12) regarding the accessors of these knowledge.

A virtual experiences statement specifies your accessors of these experience is digital. The brand new virtual modifier pertains to one another accessors from an event.

An abstract skills report determine the accessors of the enjoy try virtual, however, does not give a real implementation of the new accessors. Instead, non-conceptual derived categories must bring their own execution to have this new accessors by the overriding case. Because the an enthusiastic accessor getting a conceptual experiences report provides no execution, they will maybe not offer event_accessor_declarations.

A meeting statement including the conceptual and bypass modifiers determine that event are abstract and you may overrides a bottom skills. The latest accessors of these an event are also conceptual.

The newest accessors regarding a hereditary digital skills shall be overridden inside the a beneficial derived group from the plus a conference declaration that specifies an enthusiastic bypass modifier. This can be also known as a keen overriding event declaration. As an alternative, it focuses the newest implementations of your accessors away from a preexisting digital skills.

A keen overriding knowledge elizabeth entry to modifiers and you may label since the overridden event, indeed there is a personality sales between your variety of the new overriding in addition to overridden skills, and you can both put and remove accessors might be specified contained in this the report.

An overriding experiences declaration include the shut modifier. The means to access which modifier inhibits an excellent derived group from then overriding the function. The fresh new accessors away from a close enjoy are also close.

Apart from variations in report and you will invocation sentence structure, virtual, closed, override, and you may abstract accessors act the same as digital, sealed, bypass and you may abstract steps. Especially, the rules explained for the §14.six.4, §fourteen.six.5, §14.6.six, and you may §fourteen.six.seven apply because if accessors was indeed methods of a matching form. For every single accessor represents a strategy that have one really worth parameter of the knowledge variety of, a gap come back types of, together with exact same modifiers because the containing feel.

fourteen.nine Indexers

An enthusiastic indexer was a part that enables an object becoming indexed in the same exact way as a wide range. Indexers are stated using indexer_declarations:

A keen indexer_declaration include some properties (§21) and you will a valid mixture of the newest five accessibility modifiers (§fourteen.step 3.6), the newest (§fourteen.3.5), virtual (§fourteen.six.4), bypass (§fourteen.6.5), sealed (§fourteen.six.6), conceptual (§14.6.7), and extern (§fourteen.six.8) modifiers.

Indexer age rules as method declarations (§14.6) with regard to appropriate combinations regarding modifiers, for the you to definitely exception are the fixed modifier isn’t allowed to your an indexer declaration.

This new modifiers virtual , bypass dating for seniors dating , and you will conceptual are collectively exclusive except in a single circumstances. The latest abstract and you will bypass modifiers can be used together with her so as that an abstract indexer can be override a virtual that.

An enthusiastic overriding feel statement does not declare yet another enjoy

Note: Once the indexers are made to be used inside range ability-such as contexts, the word function sorts of since the laid out for a wide range is even used in combination with an indexer. end mention

Unless the new indexer is an explicit user interface associate implementation, the kind is actually followed by new search term so it . Getting a specific user interface affiliate execution, the sort is followed closely by an user interface_kind of, good ” . “, therefore the key phrase so it . Rather than most other professionals, indexers do not have associate-discussed labels.