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Can I set background image and opacity in the same property?
...see in CSS references how to set image transparency and how to set a background image . But how can I combine these two in order to set a transparent background image?
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How to initialize a two-dimensional array in Python?
... answered Mar 7 '10 at 17:43
Mike GrahamMike Graham
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Android accelerometer accuracy (Inertial navigation)
I was looking into implementing an Inertial Navigation System for an Android phone, which I realise is hard given the accelerometer accuracy, and constant fluctuation of readings.
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How can I select every other line with multiple cursors in Sublime Text?
...ile. Using the mouse (damn!) scroll to the bottom, hold down Ctrl, and click where the missing cursor should be to add it in.
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Best way to convert strings to symbols in hash
What's the (fastest/cleanest/straightforward) way to convert all keys in a hash from strings to symbols in Ruby?
31 Answers...
Jquery selector input[type=text]')
I wrote a code that basically selects all input type=text element like this:
4 Answers
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How do I force a DIV block to extend to the bottom of a page even if it has no content?
In the markup shown below, I'm trying to get the content div to stretch all the way to the bottom of the page but it's only stretching if there's content to display. The reason I want to do this is so the vertical border still appears down the page even if there isn't any content to display.
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Check whether an array is empty [duplicate]
...ts in array and this definitely doesn't mean that array is empty. As a quick workaround you can do following:
$errors = array_filter($errors);
if (!empty($errors)) {
}
array_filter() function's default behavior will remove all values from array which are equal to null, 0, '' or false.
Otherwise...
Shallow copy of a Map in Java
...It's always better to copy using a copy constructor. clone() in Java is broken (see SO: How to properly override clone method?).
Josh Bloch on Design - Copy Constructor versus Cloning
If you've read the item about cloning in my book, especially if you read between the lines, you will know that ...
How to optimize for-comprehensions and loops in Scala?
...I'm revisiting some Project Euler problems in Scala that I originally tackled in Java. Specifically Problem 5: "What is the smallest positive number that is evenly divisible by all of the numbers from 1 to 20?"
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