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How to show “if” condition on a sequence diagram?

... If else condition, also called alternatives in UML terms can indeed be represented in sequence diagrams. Here is a link where you can find some nice resources on the subject http://www.ibm.com/developerworks/rational/library/3101.html ...
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Convert float to double without losing precision

... It's not that you're actually getting extra precision - it's that the float didn't accurately represent the number you were aiming for originally. The double is representing the original float accurately; toString is showing the "extra" data which wa...
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How to read an external local JSON file in JavaScript?

... You cannot make a AJAX call to a local resource as the request is made using HTTP. A workaround is to run a local webserver, serve up the file and make the AJAX call to localhost. In terms of helping you write code to read JSON, you should read th...
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Block commenting in Ruby

...nd =begin and =end must be at the beginning of the line (not indented at all). Source Also, in TextMate you can press Command + / to toggle regular comments on a highlighted block of code. Source share | ...
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iPhone UIButton - image position

...pt. Any idea why we need to set both left and right edge inset? Theoretically, if I move the title to left and the image to right, that would be enough. Why do I need to set both left and right? – PokerIncome.com Jul 11 '13 at 18:23 ...
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Programmatically open Maps app in iOS 6

...ordinate2DMake(16.775, -3.009); MKPlacemark *placemark = [[MKPlacemark alloc] initWithCoordinate:coordinate addressDictionary:nil]; MKMapItem *mapItem = [[MKMapItem alloc] initWithPlacemark:placemark]; [mapItem setName:@"My Place"]; // Pas...
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String.replaceAll without RegEx

I'd like to replace all instances of a substring in a string but String.replaceAll() only accepts a pattern. The string that I have came from a previous match. Is it possible to add escapes to the pattern that I have or is there a version of replaceAll() in another class which accepts a literal ...
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Add regression line equation and R^2 on graph

...n my machine, where the label is overwritten as many times as the data is called, resulting in a thick and blurry label text. Passing the labels to a data.frame first works (see my suggestion in a comment below. – PatrickT Apr 29 '14 at 10:52 ...
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How do you use String.substringWithRange? (or, how do Ranges work in Swift?)

... So what's the right answer here? Calling advance means we have to iterate the whole way through a possibly long string. But forming an NSRange and using NSString explicitly is dangerous? What's left? – matt Nov 18 '14 at...
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Checking if a blob exists in Azure Storage

... The new API has the .Exists() function call. Just make sure that you use the GetBlockBlobReference, which doesn't perform the call to the server. It makes the function as easy as: public static bool BlobExistsOnCloud(CloudBlobClient client, string container...