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Is there a CSS selector for the first direct child only?
...erited by that div's children divs:
div.section > div { color: red }
Now, both that div and its children will be red. You need to cancel out whatever you set on the parent if you don't want it to inherit:
div.section > div { color: red }
div.section > div div { color: black }
Now only...
How to get pixel data from a UIImage (Cocoa Touch) or CGImage (Core Graphics)?
...ke(0, 0, width, height), imageRef);
CGContextRelease(context);
// Now your rawData contains the image data in the RGBA8888 pixel format.
NSUInteger byteIndex = (bytesPerRow * y) + x * bytesPerPixel;
for (int i = 0 ; i < count ; ++i)
{
CGFloat alpha = ((CGFloat) rawDat...
How can you get the Manifest Version number from the App's (Layout) XML variables?
...rsion number in the main part of the code. What I have been doing up until now is to link the version number in a String XML file to the manifest (@string/Version). What I would like to do is to do it the other way around, link a string XML variable to the version in the manifest. The reason? I'd li...
How can I reverse the order of lines in a file?
...
There's the well-known sed tricks:
# reverse order of lines (emulates "tac")
# bug/feature in HHsed v1.5 causes blank lines to be deleted
sed '1!G;h;$!d' # method 1
sed -n '1!G;h;$p' # method 2
(Explanation: prepen...
Android preferences onclick event
... deprecated. However the documentation says "[T]his functionality should now be found in the new PreferenceFragment class. If you are using PreferenceActivity in its old mode, the documentation there applies to the deprecated APIs here.", and PreferenceFragment.findPreference is not deprecated (as...
Providing a default value for an Optional in Swift?
...
Update
Apple has now added a coalescing operator:
var unwrappedValue = optionalValue ?? defaultValue
The ternary operator is your friend in this case
var unwrappedValue = optionalValue ? optionalValue! : defaultValue
You could also pr...
Generate Java class from JSON?
...t. It's still in draft (not finalised) but it's close to completion and is now a viable tool specifying your structural rules
I've recently started a new open source project specifically intended to solve your problem: jsonschema2pojo. The jsonschema2pojo tool takes a json schema document and gener...
Mongoose indexing in production code
...hen you define (compile) your model. I do that when I first start the app. Now the hard think is to decide to drop all indexes and recreate them, in case you schema changes.
– Moss
Jul 31 '13 at 12:15
...
How can one close HTML tags in Vim quickly?
...y exact rename it to "html.vim" so that it will effect HTML files as well. Now, I have two of the exact same files in ~/.vim/ftplugin (xml.vim and html.vim).
– user2719875
Jun 11 '15 at 19:55
...
Git merge errors
...h:
git checkout master
# Merge the topic branch into master - this should now be a fast-forward
# that leaves you with master exactly as 9-sign-in-out was:
git merge 9-sign-in-out
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