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Imitate Facebook hide/show expanding/contracting Navigation Bar

...OS7 Facebook iPhone app, when the user scrolls up the navigationBar gradually hides itself to a point where it completely vanishes. Then when the user scrolls down the navigationBar gradually shows itself. ...
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Why can't variables be declared in a switch statement?

...lity and consistency in the code. In the old days, you might have automatically got an "extra" stack frame, but now that should not be the case for any decent optimizing compiler. – Tall Jeff Sep 18 '08 at 14:37 ...
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How to repair a serialized string which has been corrupted by an incorrect byte count length?

...serialized array You current serialized data $data = 'a:10:{s:16:"submit_editorial";b:0;s:15:"submit_orig_url";s:13:"www.bbc.co.uk";s:12:"submit_title";s:14:"No title found";s:14:"submit_content";s:12:"dnfsdkfjdfdf";s:15:"submit_category";i:2;s:11:"submit_tags";s:3:"bbc";s:9:"submit_id";b:0;s:16:...
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Find size of an array in Perl

...er this to be the standard way to get an array's size. The second way actually returns the last index of the array, which is not (usually) the same as the array size. share | improve this answer ...
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How do I automatically scroll to the bottom of a multiline text box?

...I am adding new lines of text to it. I would like the textbox to automatically scroll to the bottom-most entry (the newest one) whenever a new line is added. How do I accomplish this? ...
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How can I check file size in Python?

...locks by the block size, but I'm still searching how to get it programmatically and cross-platform (not via tune2fs etc.) – Tomasz Gandor Apr 22 '16 at 20:56 add a comment ...
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find: missing argument to -exec

... A -exec command must be terminated with a ; (so you usually need to type \; or ';' to avoid interpretion by the shell) or a +. The difference is that with ;, the command is called once per file, with +, it is called just as few times as possible (usually once, but there is a maxi...
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Using build types in Gradle to run same app that uses ContentProvider on one device

...fied me, however Liberty was close. So this is how am I doing it. First of all at the moment I am working with: Android Studio Beta 0.8.2 Gradle plugin 0.12.+ Gradle 1.12 My goal is to run Debug version along with Release version on the same device using the same ContentProvider. In build.gradle ...
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What is PECS (Producer Extends Consumer Super)?

...h element will behave as a Thing when you perform your operation. (You actually cannot add anything to a Collection<? extends Thing>, because you cannot know at runtime which specific subtype of Thing the collection holds.) Case 2: You want to add things to the collection. Then the list is a ...
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How do I show/hide a UIBarButtonItem?

... Save your button in a strong outlet (let's call it myButton) and do this to add/remove it: // Get the reference to the current toolbar buttons NSMutableArray *toolbarButtons = [self.toolbarItems mutableCopy]; // This is how you remove the button from the toolbar and ...