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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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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...
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...
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...
Implementing IDisposable correctly
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@Ortund You misunderstood. It's best to use a using block when the class implements IDisposable. If you don't need a class to be disposable, don't implement it. It serves no purpose.
– Daniel Mann
Aug 20 '13 at 14:16
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Compelling examples of custom C++ allocators?
...tom allocation the accelerator runtime or driver is notified of the memory block
in addition the operating system can make sure that the allocated block of memory is page-locked (some call this pinned memory), that is, the virtual memory subsystem of the operating system may not move or remove the p...
How can I expand and collapse a using javascript?
...var ele = document.getElementById(elementId);
if(ele.style.display == "block") {
ele.style.display = "none";
}
else {
ele.style.display = "block";
}
}
</script>
You can pass the div ID and it will toggle between display 'none' or 'block'.
Original source...
How to check iOS version?
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Can I use guard in Objective-C instead of leaving the block open and indent in else statement?
– Legoless
Sep 19 '17 at 15:44
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