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How to load images dynamically (or lazily) when users scrolls them into view
I've noticed this in numerous "modern" websites (e.g. facebook and google image search) where the images below the fold load only when user scrolls down the page enough to bring them inside the visible viewport region ( upon view source, the page shows X number of <img> tags but they are not f...
How to support placeholder attribute in IE8 and 9
...t. The solution you have suggested in this answer seems a lot more robust and worked a treat.
– Jonny White
Sep 11 '13 at 19:03
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PHP variables in anonymous functions
I was playing around with anonymous functions in PHP and realized that they don't seem to reach variables outside of them.
Is there any way to get around this problem?
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How do I use Java to read from a file that is actively being written to?
...r. I'm still looking for a better way, but this works for me for now.
Oh, and I'll caveat this with: I'm using 1.4.2. Yes I know I'm in the stone ages still.
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How to go back to lines edited before the last one in Vim?
I'm aware of the `. command that goes to last edited line. Is there a way to go further in the editing history? I often accidentally insert something while browsing the file, undo, but then `. will not bring me where I want anymore.
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Accessing the logged-in user in a template
... thanks. I actually changed "ROLE" for "IS_AUTHENTICATED_REMEMBERED" and it worked great.
– ed209
Sep 27 '11 at 19:42
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Why does Java have transient fields?
...ct.
For example, you may have fields that are derived from other fields, and should only be done so programmatically, rather than having the state be persisted via serialization.
Here's a GalleryImage class which contains an image and a thumbnail derived from the image:
class GalleryImage imple...
Android: Scale a Drawable or background image?
... like this:
<?xml version="1.0" encoding="utf-8"?>
<bitmap xmlns:android="http://schemas.android.com/apk/res/android"
android:gravity="center"
android:src="@drawable/list_bkgnd" />
Then it will be centered in the view if used as background. There are also other flags: http://d...
How to use RestSharp with async/await
...dern example of some asynchronous C# code that uses RestSharp with async and await . I know there's been a recent update by Haack but I don't know how to use the new methods.
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Create numpy matrix filled with NaNs
...oops for vector operations in numpy.
You can create an uninitialized array and assign to all entries at once:
>>> a = numpy.empty((3,3,))
>>> a[:] = numpy.nan
>>> a
array([[ NaN, NaN, NaN],
[ NaN, NaN, NaN],
[ NaN, NaN, NaN]])
I have timed the alte...