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What are bitwise shift (bit-shift) operators and how do they work?
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The bit shifting operators do exactly what their name implies. They shift bits. Here's a brief (or not-so-brief) introduction to the different shift operators.
The Operators
>> is the arithmetic (or signed) right shift operator.
>>> ...
Maximum single-sell profit
...ll end up getting better and better solutions. It's certainly possible to do this in better than O(n2) time, and I've listed three different ways that you can think about the problem here. Hopefully this answers your question!
First, the divide-and-conquer solution. Let's see if we can solve thi...
Programmatically open new pages on Tabs
...s an option controlled by Internet Explorer users.
Opening pages using Window.open with a different window name will open in a new browser window like a popup, OR open in a new tab, if the user configured the browser to do so.
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ArrayIndexOutOfBoundsException when using the ArrayList's iterator
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Am I doing that right, as far as iterating through the Arraylist goes?
No: by calling iterator twice in each iteration, you're getting new iterators all the time.
The easiest way to write this loop is using the for-each constru...
How do I get my Maven Integration tests to run
...tests separately. In the standard unit test phase you run everything that does not pattern match an integration test. You then create a second test phase that runs just the integration tests.
Here is an example:
<plugin>
<groupId>org.apache.maven.plugins</groupId>
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What is the purpose of the reader monad?
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Don't be scared! The reader monad is actually not so complicated, and has real easy-to-use utility.
There are two ways of approaching a monad: we can ask
What does the monad do? What operations is it equipped with? What...
How to recover stashed uncommitted changes
...n git stash apply. Then use git diff to see the result.
After you're all done with your changes—the apply looks good and you're sure you don't need the stash any more—then use git stash drop to get rid of it.
I always suggest using git stash apply rather than git stash pop. The difference is...
how do you push only some of your local git commits?
...sh only 2 of them to a centralized repo (using an SVN-style workflow). How do I do this?
5 Answers
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C++, variable declaration in 'if' expression
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As of C++17 what you were trying to do is finally possible:
if (int a = Func1(), b = Func2(); a && b)
{
// Do stuff with a and b.
}
Note the use of ; of instead of , to separate the declaration and the actual condition.
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How do I 'overwrite', rather than 'merge', a branch on another branch in Git?
...e latest one and I no longer need the old changes in email branch, yet I don't want to delete them.
12 Answers
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