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Why aren't variable-length arrays part of the C++ standard?
... Also, the scope for alloca() is the entire function, not just the block of code containing the variable. So using it inside of a loop it will continuously increase the stack. A VLA does not have this problem.
– sashoalm
Jul 1 '16 at 11:49
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How to debug heap corruption errors?
...r
quickly, without checking every
statement that accesses the memory
block, you can set the memory pointer
to an invalid value after freeing the
block:
#ifdef _DEBUG // detect the access to freed memory
#undef free
#define free(p) _free_dbg(p, _NORMAL_BLOCK); *(int*)&p = 0x666;
#endif...
How is CountDownLatch used in Java Multithreading?
...riers are for waiting for other threads. cyclicBarrier.await() goes into a blocking state.
– RDM
Nov 13 '17 at 13:02
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show 4 more comments
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Do I need to disable NSLog before release Application?
...
Inside current default setting of project in Xcode, the NS_BLOCK_ASSERTIONS macro will be set to 1 in release version, and DEBUG=1 in Debug version.
So, I prefer the following method.
// NS_BLOCK_ASSERTIONS is defined by default, as shown in the screenshot above.
// Or, you can def...
How can bcrypt have built-in salts?
...es as long as a cost factor of 10 does. To clear up other misinformation, PHP's crypt function uses the unix crypt library which is implemented in c.
– thomasrutter
Jul 3 '12 at 13:02
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Ruby Hash to array of values
...| v }
#returns [["a", "b", "c"], ["b", "c"]]
Enumerable#collect takes a block, and returns an array of the results of running the block once on every element of the enumerable. So this code just ignores the keys and returns an array of all the values.
The Enumerable module is pretty awesome. Kno...
What are queues in jQuery?
... +1. I'm working on a jQuery-based user script that needs to connect to a PHP script as if it were another PHP script running on the client -- one HTTP request/other operation at a time, so this will definitely be helpful. Just a question: jQuery requires that queues be attached to objects, right? ...
Best practices for catching and re-throwing .NET exceptions
...tack trace are preserved. Is there a difference between the following code blocks in the way they handle this?
11 Answers
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How does the static modifier affect this code?
...nd then executing the declared static initializers (and static initializer blocks) in the order that they appear in the class. In this case, you have this:
static A obj = new A();
static int num1;
static int num2=0;
It happens like this:
The statics start out with their default initial values;...
Simple example of threading in C++
...sg;
}
int main()
{
// Constructs the new thread and runs it. Does not block execution.
thread t1(task1, "Hello");
// Do other things...
// Makes the main thread wait for the new thread to finish execution, therefore blocks its own execution.
t1.join();
}
More information abo...