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Can I safely delete contents of Xcode Derived data folder?
...projects again.
Xcode8+ Update
From the Xcode8 that removed project option from the window tab so you can still use first way:
Xcode -> Preferences -> location -> click on small arrow button as i explain in my first answer.
Xcode7.3 Update
For remove particular project's DeriveData y...
Navigation bar show/hide
I have an app with a navigation bar consisting of 2 bar buttons. I would like to hide and show this navigation bar when a user double taps the screen.
...
How to calculate the bounding box for a given lat/lng location?
...inate class in System.Device.Location that takes Latitude and Longitude as parameters.
– Lawyerson
Oct 16 '15 at 9:31
1
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Is it possible to refresh a single UITableViewCell in a UITableView?
...ndexPaths:[NSArray arrayWithObjects:indexPathOfYourCell, nil] withRowAnimation:UITableViewRowAnimationNone];
[self.tableView endUpdates];
In Xcode 4.6 and higher:
[self.tableView beginUpdates];
[self.tableView reloadRowsAtIndexPaths:@[indexPathOfYourCell] withRowAnimation:UITableViewRowAnimation...
How can I troubleshoot my Perl CGI script?
...ou may encounter, nor a tutorial on bug squashing. It
is just the culmination of my experience debugging CGI scripts for twenty (plus!) years. This page seems to have had many different homes, and I seem
to forget it exists, so I'm adding it to the StackOverflow. You
can send any comments or sugge...
console.writeline and System.out.println
.../.in and System.console():
System.console() returns null if your application is not run in a terminal (though you can handle this in your application)
System.console() provides methods for reading password without echoing characters
System.out and System.err use the default platform encoding, whil...
Prevent body scrolling but allow overlay scrolling
I've been searching for a "lightbox" type solution that allows this but haven't found one yet (please, suggest if you know of any).
...
Using ViewPagerIndicator library with Android Studio and Gradle
...y , but I'm unable to get it working with my Gradle project in Android Studio.
19 Answers
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Is there an ignore command for git like there is for svn?
...dd a pattern
git ignore "*.log"
Add one of the templates from gitignore.io
git ignore-io -a rails
git-extras provides many more useful commands. Definitely worth trying out.
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Convert between UIImage and Base64 string
...e to create into NSData format
let imageData:NSData = UIImagePNGRepresentation(image)!
//OR next possibility
//Use image's path to create NSData
let url:NSURL = NSURL(string : "urlHere")!
//Now use image to create into NSData format
let imageData:NSData = NSData.init(contentsOfURL: url)!
Swift 2....