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How do I declare a 2d array in C++ using new?
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A dynamic 2D array is basically an array of pointers to arrays. You can initialize it using a loop, like this:
int** a = new int*[rowCount];
for(int i = 0; i < rowCount; ++i)
a[i] = new int[colCount];
The above, for colCount= 5 and ro...
What is the difference between a port and a socket?
This was a question raised by one of the software engineers in my organisation. I'm interested in the broadest definition.
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MySQL: Large VARCHAR vs. TEXT?
...ch means the messages would never be inserted into the db as longer than this.
8 Answers
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What does java.lang.Thread.interrupt() do?
...appropriate exception (usually InterruptedException)
Interruption in Java is not pre-emptive. Put another way both threads have to cooperate in order to process the interrupt properly. If the target thread does not poll the interrupted status the interrupt is effectively ignored.
Polling occurs ...
What is the difference between a static and a non-static initialization code block
My question is about one particular usage of static keyword. It is possible to use static keyword to cover a code block within a class which does not belong to any function. For example following code compiles:
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Do the parentheses after the type name make a difference with new?
If 'Test' is an ordinary class, is there any difference between:
6 Answers
6
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Can you provide some examples of why it is hard to parse XML and HTML with a regex? [closed]
One mistake I see people making over and over again is trying to parse XML or HTML with a regex. Here are a few of the reasons parsing XML and HTML is hard:
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What is the purpose of Looper and how to use it?
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What is Looper?
Looper is a class which is used to execute the Messages(Runnables) in a queue. Normal threads have no such queue, e.g. simple thread does not have any queue. It executes once and after method execution finishes, t...
When to use inline function and when not to use it?
I know that inline is a hint or request to compiler and its used to avoid function call overheads.
14 Answers
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Logical Operators, || or OR?
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There is no "better" but the more common one is ||. They have different precedence and || would work like one would expect normally.
See also: Logical operators (the following example is taken from there):
// The result of the ex...