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Why must wait() always be in synchronized block
We all know that in order to invoke Object.wait() , this call must be placed in synchronized block, otherwise an IllegalMonitorStateException is thrown. But what's the reason for making this restriction? I know that wait() releases the monitor, but why do we need to explicitly acquire the mon...
What is the difference between JOIN and UNION?
What is the difference between JOIN and UNION ? Can I have an example?
15 Answers
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How is “int* ptr = int()” value initialization not illegal?
The following code (taken from here ):
5 Answers
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How do you get a list of the names of all files present in a directory in Node.js?
I'm trying to get a list of the names of all the files present in a directory using Node.js. I want output that is an array of filenames. How can I do this?
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Can I zip more than two lists together in Scala?
Given the following Scala List:
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What is the easiest way to make a C++ program crash?
I'm trying to make a Python program that interfaces with a different crashy process (that's out of my hands). Unfortunately the program I'm interfacing with doesn't even crash reliably! So I want to make a quick C++ program that crashes on purpose but I don't actually know the best and shortest way ...
Which is faster: while(1) or while(2)?
This was an interview question asked by a senior manager.
23 Answers
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Running Windows batch file commands asynchronously
Say, if I have
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What is the “continue” keyword and how does it work in Java?
I saw this keyword for the first time and I was wondering if someone could explain to me what it does.
13 Answers
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Rank items in an array using Python/NumPy, without sorting array twice
I have an array of numbers and I'd like to create another array that represents the rank of each item in the first array. I'm using Python and NumPy.
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