I am writing a customized rule for cheking Enum member value.
Can anyone helps me how can I read enum member with FxCop SDK.
I can read the Enum name but I have no idea how can I read Enum memebr name?
Please Help
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Trying to program 'with immutability in mind' in VB.NET can be a challenge.
In many cases, creating classes with a parametrized constructor and properties with no setters is a pretty good way to create objects that are immutable (from outside the object).
Sometimes it would be more practical to just use the VB.NET ReadOnly keyword, but:
If the data type of the variable is a reference type, such as an array
or a class instance, its members can be changed even if the variable
itself is ReadOnly.
See here.
Is there a code analysis tool or simple solution that can give me a compilation warning if for instance a string array that is declared ReadOnly has one of its members changed?
That would make the ReadOnly keyword so much more useful. Or is it possible to define such a rule myself in Visual Studio 2022?
Not striving for (functional programming-esque) purity but such an extra check to make the ReadOnly keyword more useful would be pretty handy, so hopefully there is a straightforward way to get such a code check!
When I define an enum class in Kotlin
enum class Answer {
YES,
NO
}
It has a valueOf(value: String) attached to it.
val doYouWantBeerOrCoffee = Answer.valueOf("YES") // Answer.YES
But where is this function actually defined? It is definitely not in the Enum.Kt and using Idea's Go to Implementation tool only takes me back to my Answer enum definition.
It's generated by the compiler. That's what "synthetic" means in
Enum classes in Kotlin have synthetic methods allowing to list the defined enum constants and to get an enum constant by its name.
If you decompile Answer.class you'll see it, but it isn't written as Kotlin (or Java) source code anywhere.
This method is a part of JDK, and defined in Enum.java class.
Which is the common base class of all Java language enumeration types.
Kotlin uses the same class for enums
Could someone explain the static fields declared in the interface org.eclipse.gef.EditPolicy(e.g COMPONENT_ROLE,CONNECTION_ROLE,CONNECTION_ENDPOINTS_ROLE etc).I have gone through the javadocs of the interface but the explanation is not clear.
AFAIK they have no real meaning. When you install an edit policy you must give it a unique name, but I have never code that uses these name. You can freely ignore them :-)
I've read over internet some relevant information that in fact .Net provides possibility to create defined new dynamic type at runtime. First i thought its great news because my current application got hard-coded enum type defined in class. What my thought was i could create that enum usinf reflection and create his enum values from XML. Unfortunetly i tried to find some good tutorial but cannot find something could explain me enough how to do that. Can you give me either some good sample or redirect me to somwhere where i can obtain some knowledge how could i achieve that?
I read somewhere that interfaces can have member variables.
Static final constants only, can use
them without qualification in classes
that implement the interface. On the
other paw, these unqualified names
pollute the namespace. You can use
them and it is not obvious where they
are coming from since the
qualification is optional.
I am not quite understood by what they meant? Any help?
What you read is incorrect. Interfaces cannot have member variables.
In VB.Net the only allowable definitions inside an interface are
Properties
Methods
Events
Type Definitions (not legal in C#)
I'm not entirely sure what the above paragraph is referring to. Based on the text though it sounds like it's refering to Java. They phrase static and final is most often associated with Java code and not .Net (static and readonly).
Can you give us some more context on it?
If you define a constant like this inside a class MyClass:
public static final int MY_CONSTANT = 1;
you can refer to it from other classes as MyClass.MY_CONSTANT, using the MyClass qualifier. This hints the location of the constant definition.
If you define such a constant in an interface MyInterface, you still can refer to it using MyInterface.MY_CONSTANT. However in the classes implementing MyInsterface you can simply use MY_CONSTANT without "MyInterface" prefix.
It may look convenient (less key strokes), but may lead to confusion because without qualifier (prefix) it is not clear where the constant was originally defined.
Adding member variables to interfaces would be bringing in MI through the back door.
Not available in .NET, sorry.
I wish it were there though.