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Obtaining a powerset of a set in Java
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Yes, it is O(2^n) indeed, since you need to generate, well, 2^n possible combinations. Here's a working implementation, using generics and sets:
public static <T> Set<Set<T>> powerSet(Set<T> originalSet) {
Set<Set<T>> sets = new HashSet<Set<T>>(...
Indent multiple lines quickly in vi
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Use the > command. To indent five lines, 5>>. To mark a block of lines and indent it, Vjj> to indent three lines (Vim only). To indent a curly-braces block, put your cursor on one of the curly braces and use >% or from anyw...
White space showing up on right side of page when background image should extend full length of page
... iphone with this code, it became very slow. I found in the end it was the combination of height: 100% and overflow-x: hidden, so I removed height: 100% and it works much better.
– Paul Mason
Jul 11 '12 at 18:28
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Command line progress bar in Java
I have a Java program running in command line mode.
I would like to display a progress bar, showing the percentage of job done.
The same kind of progress bar you would see using wget under unix.
Is this possible?
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GitHub pull request showing commits that are already in target branch
...'t master. The target branch was behind master and the pull request showed commits from master, so I merged master and pushed it to GitHub, but the commits and diff for them still appear in the pull request after refreshing. I've doubled checked that the branch on GitHub has the commits from master....
PopupWindow - Dismiss when clicked outside
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@WareNinja , your comment worked! Maybe you would better leave an entire answeir to this quesiton, it would be useful for others
– Anton Kizema
Mar 3 '15 at 18:08
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What is the difference between user and kernel modes in operating systems?
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Kernel Mode
In Kernel mode, the executing code has complete and unrestricted
access to the underlying hardware. It
can execute any CPU instruction and
reference any memory address. Kernel
mode is generally reserved for the
lowest-level, most trusted functions
of t...
How to get the caller's method name in the called method?
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How to get the current time in YYYY-MM-DD HH:MI:Sec.Millisecond format in Java?
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Determine if code is running as part of a unit test
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