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The difference between fork(), vfork(), exec() and clone()
...ates a child process.
vfork() is a historical optimized version of fork(), meant to be used when execve() is called directly after fork(). It turned out to work well in non-MMU systems (where fork() cannot work in an efficient manner) and when fork()ing processes with a huge memory footprint to run ...
In C# what is the difference between a destructor and a Finalize method in a class?
...run, but is otherwise identical to overriding the Finalize function. This means that when you write the destructor syntax, you're really writing the finalizer.
According to Microsoft, the finalizer refers to the function that the garbage collector calls when it collects (Finalize), while the destr...
How to print to console in pytest?
...ckish way to do stuff, but may be it is the stuff you need: after all, TDD means you mess with stuff and leave it clean and silent when it's ready :-).
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const vs constexpr on variables
...constexpr double PI2 = 3.141592653589793;
Both PI1 and PI2 are constant, meaning you can not modify them. However only PI2 is a compile-time constant. It shall be initialized at compile time. PI1 may be initialized at compile time or run time. Furthermore, only PI2 can be used in a context tha...
How to send POST request in JSON using HTTPClient in Android?
... until a connection is established.
// The default value is zero, that means the timeout is not used.
int timeoutConnection = 60*1000;
HttpConnectionParams.setConnectionTimeout(httpParameters, timeoutConnection);
// Set the default socket timeout (SO_TIMEOUT)
// in milliseconds...
Referencing system.management.automation.dll in Visual Studio
... last updated 29/03/2013 " The owner has unlisted this package. This could mean that the package is deprecated or shouldn't be used anymore."
– juFo
Jun 14 '18 at 15:13
add a ...
How to remove files that are listed in the .gitignore but still on the repository?
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what do you mean by fake commit message? It's a real commit message :P You can change the message of course, depending on your needs...
– gtatr
Aug 1 '19 at 21:15
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How can I view an old version of a file with Git?
...AD@{2013-02-25}:./fileInCurrentDirectory.txt
Note that HEAD@{2013-02-25} means "where HEAD was on 2013-02-25" in this repository (using the reflog), not "the last commit before 2013-02-25 in this branch in history".
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Hibernate SessionFactory vs. JPA EntityManagerFactory
... Session from EntityManager, same as SessionFactory.getCurrentSession()? I mean, will it open new Session if it is not already created? How does it work in multithreaded environment?
– Sarvesh
Sep 17 '18 at 15:37
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Difference between reduce and foldLeft/fold in functional programming (particularly Scala and Scala
... monoid, i.e. an operation that is both commutative and associative. This means the operation can be parallelized.
This distinction is very important for Big Data / MPP / distributed computing, and the entire reason why reduce even exists. The collection can be chopped up and the reduce can opera...