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How can I initialize base class member variables in derived class constructor?

...ince it would destroy encapsulation. Instead, create a constructor in A to allow B (or any subclass of A) to initialize them: class A { protected: A(int a, int b) : a(a), b(b) {} // Accessible to derived classes // Change "protected" to "public" to allow others to instantiate A. private: ...
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Max or Default?

...wiggering the spacklerorke, and riding the flying unicorn to Neverland are all meaningless, impossible, undefined. Now, what is it that you actually want to do? share | improve this answer ...
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What is INSTALL_PARSE_FAILED_NO_CERTIFICATES error?

I was trying to change my default/main/startup (whatever you call it) activity by editing the androidmanifest.xml file. All i did was change the android:name property. however, this completely broke the entire app. when I try to install it fails and reads. ...
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Why have header files and .cpp files? [closed]

...dencies so that code that uses the header doesn't necessarily need to know all the details of the implementation and any other classes/headers needed only for that. This will reduce compilation times and also the amount of recompilation needed when something in the implementation changes. It's not ...
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How do I abort the execution of a Python script? [duplicate]

... Prints "aa! errors!" and exits with a status code of 1. There is also an _exit() function in the os module. The sys.exit() function raises a SystemExit exception to exit the program, so try statements and cleanup code can execute. The os._exit() version doesn't do this. It just ends the program...
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Sending Email in Android using JavaMail API without using the default/built-in app

...net.ssl.SSLSocketFactory"); props.put("mail.smtp.socketFactory.fallback", "false"); props.setProperty("mail.smtp.quitwait", "false"); session = Session.getDefaultInstance(props, this); } protected PasswordAuthentication getPasswordAuthentication()...
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Using Mockito's generic “any()” method

...e able to compile lambda expressions, but it improves type inferences generally. Primitive types This doesn't work with primitive types, unfortunately: public interface IBar { void doPrimitiveStuff(int i); } verify(bar).doPrimitiveStuff(any()); // Compiles but throws NullPointerException v...
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SQL Server - transactions roll back on error?

...xact_abort on before your transaction to make sure sql rolls back automatically in case of error. share | improve this answer | follow | ...
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What's invokedynamic and how do I use it?

I keep hearing about all the new cool features that are being added to the JVM and one of those cool features is invokedynamic. I would like to know what it is and how does it make reflective programming in Java easier or better? ...
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Assignment in an if statement

... = value as T; if (t != null) { action(t); } } Then call it with: animal.AsIf<Dog>(dog => { // Use dog in here }); Alternatively, you could combine the two: public static void AsIf<T>(this object value, Action<T> action) where T : class { // EVI...