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When should we call System.exit in Java
In Java, What is the difference with or without System.exit(0) in following code?
10 Answers
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How do I pass variables and data from PHP to JavaScript?
I have a variable in PHP, and I need its value in my JavaScript code. How can I get my variable from PHP to JavaScript?
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Why does integer overflow on x86 with GCC cause an infinite loop?
The following code goes into an infinite loop on GCC:
6 Answers
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What is the purpose of Serialization in Java?
I have read quite a number of articles on Serialization and how it is so nice and great but none of the arguments were convincing enough. I am wondering if someone can really tell me what is it that we can really achieve by serializing a class?
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How to deal with a slow SecureRandom generator?
...you use SecureRandom . Unfortunately, SecureRandom can be very slow. If it uses /dev/random on Linux, it can block waiting for sufficient entropy to build up. How do you avoid the performance penalty?
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Why are variables “i” and “j” used for counters?
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It comes ultimately from mathematics: the summation notation traditionally uses i for the first index, j for the second, and so on. Example (from http://en.wikipedia.org/wiki/Summation):
It's also used that way for co...
Move capture in lambda
...move the unique_ptr into the lambda
go.run( [ u{move(u)} ] { do_something_with( u ); } );
But it is much more general in the sense that captured variables can be initialized with anything like so:
auto lambda = [value = 0] mutable { return ++value; };
In C++11 this is not possible yet, but wit...
Understanding the main method of python [duplicate]
...roach to "main" is almost unique to the language(*).
The semantics are a bit subtle. The __name__ identifier is bound to the name of any module as it's being imported. However, when a file is being executed then __name__ is set to "__main__" (the literal string: __main__).
This is almost always ...
Default value of a type at Runtime [duplicate]
For any given type i want to know its default value.
6 Answers
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Declaring variables inside loops, good practice or bad practice?
...les inside loops, you ensure their scope is restricted to inside the loop. It cannot be referenced nor called outside of the loop.
This way:
If the name of the variable is a bit "generic" (like "i"), there is no risk to mix it with another variable of same name somewhere later in your code (can a...