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Imitate Facebook hide/show expanding/contracting Navigation Bar
...wing property:
@property (nonatomic) CGFloat previousScrollViewYOffset;
And here are the UIScrollViewDelegate methods:
- (void)scrollViewDidScroll:(UIScrollView *)scrollView
{
CGRect frame = self.navigationController.navigationBar.frame;
CGFloat size = frame.size.height - 21;
CGFloat...
Finding the Eclipse Version Number
...Eclipse Version" question references a .eclipseproduct in the main folder, and it contains:
name=Eclipse Platform
id=org.eclipse.platform
version=3.x.0
So that seems more straightforward than my original answer below.
Also, Neeme Praks mentions below that there is a eclipse/configuration/config....
Ruby, remove last N characters from a string?
... 2.5 you can use delete_suffix or delete_suffix! to achieve this in a fast and readable manner.
The docs on the methods are here.
If you know what the suffix is, this is idiomatic (and I'd argue, even more readable than other answers here):
'abc123'.delete_suffix('123') # => "abc"
'abc123'...
How does type Dynamic work and how to use it?
...se one of these methods it is enough to write a class that extends Dynamic and to implement the methods there:
class DynImpl extends Dynamic {
// method implementations here
}
Furthermore one need to add a
import scala.language.dynamics
or set the compiler option -language:dynamics because t...
Is Random class thread safe?
Is it valid to share one instance of the Random class between multiple threads? And to call nextInt(int) from multiple threads in particular?
...
Create zip file and ignore directory structure
I need to create a zip file using this command:
7 Answers
7
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datetime.parse and making it work with a specific format
...get this one.
If you need to parse other formats, you can check out the Standard DateTime Format Strings.
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What is the at sign (@) in a batch file and what does it do?
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At symbol - @
The @ symbol tells the command processor to be less verbose; to only show the output of the command without showing it being executed or any prompts associated with the execution. When used it is prepended to the beginning of the command, it is not nec...
Select arrow style change
... div with the same size, I set the background of the select as transparent and I'm including a picture(with the same size as the arrow) in the right top corner of the div as background.
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XPath with multiple conditions
...hat XPath can I use to select any category with a name attribute specified and any child node author with the value specified.
...