The means to access that it modifier prevents an effective derived class of then overriding the home. The new accessors away from a close property are also shut.
Except for differences in statement and you may invocation syntax, digital, sealed, override, and you can conceptual accessors react the same as digital, close, bypass and you may abstract methods. Especially, the guidelines discussed for the §fourteen.six.4, §fourteen.6.5, §14.6.six, and you may §fourteen.six.eight implement since if accessors was basically types of a matching setting:
- A get accessor corresponds to a good parameterless means which have a revenue property value the house type plus the exact same modifiers just like the with which has property.
- An appartment accessor corresponds to a method with just one well worth factor of the house kind of, a void return types of, additionally the exact same modifiers once the which has assets.
X are an online read-just assets, Y try a virtual read-establish possessions, and you will Z is a conceptual see-write assets. Since the Z is conceptual, the newest which includes group A shall additionally be announced abstract.
Right here, new declarations off X , Y , and you can Z was overriding possessions declarations. For each property statement exactly matches the newest use of modifiers, types of, and you may name of your corresponding passed on assets. The new rating accessor from X plus the put accessor regarding Y use the legs keywords to view the fresh handed down accessors. This new statement regarding Z overrides each other conceptual accessors-for this reason, there are not any a good abstract form participants for the B , and B is permitted to be a low-abstract group. end analogy
When a home is actually announced since the an override, any overridden accessors is going to be offered to the fresh overriding code. On top of that, this new declared the means to access from both the assets otherwise indexer itself, and of the fresh new accessors, should matches compared to the fresh overridden user and you can accessors.
14.8.step one General
A conference is actually a member that allows an item otherwise class to add announcements. Subscribers normally mount executable password having occurrences because of the promoting knowledge handlers.
A meeting_report include some characteristics (§21) and you can a legitimate mixture of the four access modifiers (§14.step three.6), brand new (§fourteen.step 3.5), static (§14.6.3, §14.8.4), virtual (§fourteen.6.cuatro, §fourteen.8.5), override (§14.six.5, §fourteen.8.5), shut (§14.six.6), conceptual (§fourteen.six.eight, §14.8.5), and extern (§14.6.8) modifiers.
The kind of a conference declaration are a delegate_particular (§8.dos.8), hence subcontract_particular will be about because the obtainable because the feel by itself (§7.5.5).
fourteen.8 Occurrences
A meeting report may include knowledge_accessor_declarations. Yet not, if this does not, to have low-extern, non-conceptual situations, the brand new compiler will supply her or him instantly (§fourteen.8.2); having extern occurrences, the fresh new accessors are provided externally.
An event statement that omits event_accessor_declarations talks of one or more situations-one to for every of your changeable_declarators. The brand new qualities and you can modifiers connect with all of the players declared by such a meeting_statement.
When a conference declaration boasts an enthusiastic extern modifier, the function is claimed become an outward knowledge. Since the an external enjoy declaration brings no execution, it’s an error for it to include both extern modifier and you may knowledge_accessor_declarations.
It’s an amass-time error having a variable_declarator regarding a conference declaration that have a conceptual otherwise exterior modifier to include a variable_initializer.
A conference can be utilized as kept-hand operand of += and you can -= providers. Such workers are used, respectively, to add experiences handlers to, or even to clean out feel handlers out of an event, and also the availability modifiers of one’s skills manage the latest contexts during the which including procedures are allowed.
The actual only real functions which might be let to your a conference by code that is outside the input and this you to definitely experience is stated, is actually += and you can -= . Thus quizy older women dating, when you are such as for instance password can add and remove handlers having a meeting, it can’t really get or customize the underlying directory of enjoy handlers.
Into the a process of your means x += y otherwise x –= y , whenever x is actually a conference the consequence of the brand new operation enjoys kind of gap (§.4) (as opposed to getting the form of x , on the property value x pursuing the project, for other the brand new += and -= workers laid out towards the non-event versions). Which inhibits additional password off indirectly exploring the underlying delegate regarding an event.