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Explain the use of a bit vector for determining if all characters are unique
...d plus it can store more flags.
For future reference: bit vector is also known as bitSet or bitArray. Here are some links to this data structure for different languages/platforms:
CPP: BitSet
Java: BitSet
C#: BitVector32 and BitArray
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JavaScript closures vs. anonymous functions
...ree variable.
That free variable is called an upvalue of the closure F.
Now let's use this to figure out who uses closures and who doesn't (for the sake of explanation I have named the functions):
Case 1: Your Friend's Program
for (var i = 0; i < 10; i++) {
(function f() {
var i2...
How can I find the number of arguments of a Python function?
How can I find the number of arguments of a Python function? I need to know how many normal arguments it has and how many named arguments.
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Visual Studio: Is there a way to collapse all items of Solution Explorer?
I know that I can use Arrow Keys to collapse items of solution explorer one by one, but I would like to know if there is a way to collapse all items with only one operation. I want to know it because, today I have a solution with 6 projects that have at least two hundred files and if I try to coll...
How can I initialise a static Map?
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Jordan: it is an old topic now but I suspect @Luke was trying to use a string as a key in a map that had a different key type, e.g. Map<Integer, String>.
– Miserable Variable
Jan 3 '12 at 23:53
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Where is Developer Command Prompt for VS2013?
...VsDevCmd.bat"
Initial Directory: Select as suits your needs.
Click OK.
Now you have command prompt access under the Tools Menu.
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What's the simplest way to list conflicted files in Git?
...one into an executable file named 'git-conflicts', made accessible to git, now I can just:
git conflicts to get the list I wanted.
Update: as Richard suggests, you can set up an git alias, as alternative to the executable
git config --global alias.conflicts '!git ls-files -u | cut -f 2 | sort -u'
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How do I update a GitHub forked repository?
...itHub. When you create a forked repository on GitHub and clone it, GitHub knows that the repository is a fork; Git has no reason to, and does not. (Why doesn't the clone copy the Git remotes? Git is decentralized; different people will want different remotes; it would make no sense to do this.) See ...
How to convert a Base64 string into a Bitmap image to show it in a ImageView?
...ase64Encoded = encodedString.substring(encodedString.indexOf(",") + 1);
Now the pureBase64Encoded object is ready to be decoded:
final byte[] decodedBytes = Base64.decode(pureBase64Encoded, Base64.DEFAULT);
Now just simply use the line below to turn this into a Bitmap Object! :
Bitmap deco...
NPM global install “cannot find module”
...hy this has made them incapable of finding installed modules. The fix for now is to point NODE_PATH at the right directory:
export NODE_PATH=/opt/lib/node_modules
My require('promised-io/promise') now succeeds.
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