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What's wrong with overridable method calls in constructors?

... On invoking overridable method from constructors Simply put, this is wrong because it unnecessarily opens up possibilities to MANY bugs. When the @Override is invoked, the state of the object may be inconsistent and/or incomplete. A quote from Effective ...
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C# vs Java generics [duplicate]

...as taken to keep the legacy code compatible with new code using generics: From The Java Tutorials, Generics: Type Erasure: When a generic type is instantiated, the compiler translates those types by a technique called type erasure — a process where the compiler removes all information...
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java.net.ConnectException: Connection refused

I'm trying to implement a TCP connection, everything works fine from the server's side but when I run the client program (from client computer) I get the following error: ...
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How to check if a Unix .tar.gz file is a valid file without uncompressing?

...e files integrity http://linux.about.com/od/commands/l/blcmdl1_gzip.htm from: http://unix.ittoolbox.com/groups/technical-functional/shellscript-l/how-to-test-file-integrity-of-targz-1138880 To test the gzip file is not corrupt: gunzip -t file.tar.gz To test the tar file inside is not corrupt:...
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Count number of lines in a git repository

...stat 4b825dc642cb6eb9a060e54bf8d69288fbee4904 This shows the differences from the empty tree to your current working tree. Which happens to count all lines in your current working tree. To get the numbers in your current working tree, do this: git diff --shortstat `git hash-object -t tree /dev/...
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When is JavaScript synchronous?

... functions. When the called function exits its execution context is popped from the stack, and then next execution context is popped and so on... For example function abc() { console.log('abc'); } function xyz() { abc() console.log('xyz'); } var one = 1; xyz(); In the above code a g...
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What are the basic rules and idioms for operator overloading?

...ed in hardware interfacing for the bit-manipulation functions they inherit from C, have become more prevalent as overloaded stream input and output operators in most applications. For guidance overloading as bit-manipulation operators, see the section below on Binary Arithmetic Operators. For impl...
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What exactly is Python multiprocessing Module's .join() Method Doing?

Learning about Python Multiprocessing (from a PMOTW article ) and would love some clarification on what exactly the join() method is doing. ...
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Git fetch remote branch

...have similarities, so we'll sometimes want to commit back to the * master from the branch . 30 Answers ...
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How often does python flush to a file?

...fer is full... at which time the buffer gets "flushed" (content is written from the buffer to the file). You can explicitly flush the buffer by calling the flush() method on a file handle. – Corey Goldberg Mar 5 '19 at 4:59 ...