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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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android:drawableLeft margin and/or padding

... then drawablePadding doesn't do anything. I'm struggling with this right now as well. My buttons are quite wide, and the icon is hanging on the left edge of the button and the text is centered in the middle. My only way to get around this for now has been to bake in a margin on the drawable by a...
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Detecting when user has dismissed the soft keyboard

... I know a way to do this. Subclass the EditText and implement: @Override public boolean onKeyPreIme(int keyCode, KeyEvent event) { if (event.getKeyCode() == KeyEvent.KEYCODE_BACK) { // Do your thing. return true; // S...
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PHP/MySQL insert row then get 'id'

... As to PHP's website, mysql_insert_id is now deprecated and we must use PDO. To do this with PDO, proceed as following: $db = new PDO('mysql:dbname=database;host=localhost', 'user', 'pass'); $statement = $db->prepare('INSERT INTO people(name, city) VALUES(:name,...
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Case-insensitive search in Rails model

...ot's comment does not apply to strings from user input. "#$$" is a little-known shortcut for escaping global variables with Ruby string interpolation. It's equivalent to "#{$$}". But string interpolation doesn't happen to user-input strings. Try these in Irb to see the difference: "$##" and '$##'. T...
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Pointers in Python?

I know Python doesn't have pointers, but is there a way to have this yield 2 instead 9 Answers ...
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Eclipse: How do i refresh an entire workspace? F5 doesn't do it

...t it's no longer highlighted (but the P. Explorer still has focus) F5 will now Refresh the entire workspace Effectively F5 refreshes the Workspace when a navigation view has focus and nothing is selected. share | ...
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Set a cookie to never expire

...r and get sent to the client as a time near zero. (This is happening right now for 25-year cookies on PHP.) – Riking Apr 11 '13 at 22:28 84 ...
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Path of assets in CSS files in Symfony 2

...is would achive EXACTLY the behaviour desired in the question. Another (unknown if possible) solution would be to explore if "assets:install" can only take "public" as the source or could also take "assets" as a source to publish. That would help when installed with the --symlink option when develop...
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Xcode doesn't see my iOS device but iTunes does

... Select Window ➜ Organizer in Xcode. Now under Devices, select your device. If it is not ready for development then click use for development. If above doesn't solve your problem then from your project settings, set deployment target to one which your app is dev...