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in iPhone App How to detect the screen resolution of the device
...l give you the entire screen's resolution in points, so it would most typically be 320x480 for iPhones. Even though the iPhone4 has a much larger screen size iOS still gives back 320x480 instead of 640x960. This is mostly because of older applications breaking.
CGFloat screenScale = [[UIScreen main...
Avoiding SQL injection without parameters
...y. Instead they want to replace single apostrophes with two apostrophes in all strings to avoid sql injections. Our databases are all running Sql Server 2005 or 2008 and our code base is running on .NET framework 2.0.
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Android - print full exception backtrace to log
...dard output and error output are directed to /dev/null by default so it is all lost. If you want to log this output then you need to follow the instructions "Viewing stdout and stderr" shown here
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Prevent double curly brace notation from displaying momentarily before angular.js compiles/interpola
...t, but the preferred usage is to apply multiple ngCloak
directives to small portions of the page to permit progressive rendering of the browser view
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What is an initialization block?
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First of all, there are two types of initialization blocks:
instance initialization blocks, and
static initialization blocks.
This code should illustrate the use of them and in which order they are executed:
public class Test {
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How can I add new array elements at the beginning of an array in Javascript?
...X
shift X X
Check out the MDN Array documentation. Virtually every language that has the ability to push/pop elements from an array will also have the ability to unshift/shift (sometimes called push_front/pop_front) elements, you should never have to implement these yourself.
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In Objective-C why should I check if self = [super init] is not nil?
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For example:
[[NSData alloc] initWithContentsOfFile:@"this/path/doesn't/exist/"];
[[NSImage alloc] initWithContentsOfFile:@"unsupportedFormat.sjt"];
[NSImage imageNamed:@"AnImageThatIsntInTheImageCache"];
... and so on. (Note: NSData might throw...
Do copyright dates need to be updated? [closed]
...e work.
Therefore, if the claim is based on common law copyright (not formally registered), then the date should be the date of first publication. If the claim is a registered copyright, then the date should be the date claimed in the registration. In cases where the work was substantially revised ...
What does the leading semicolon in JavaScript libraries do?
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It allows you to safely concatenate several JavaScript files into one, to serve it quicker as one HTTP request.
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“for” vs “each” in Ruby
...The reason why x remains in the for scenario is due to the fact that (generally speaking) keywords don't create new scopes. if, unless, begin, for, while, etc. all work with the current scope. #each however accepts a block. Blocks always add their own scope on top of the current scope. Meaning that ...