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How to calculate time in hours between two dates in iOS

...ate: (NSDate *) dateT { NSMutableString *timeLeft = [[NSMutableString alloc]init]; NSDate *today10am =[NSDate date]; NSInteger seconds = [today10am timeIntervalSinceDate:dateT]; NSInteger days = (int) (floor(seconds / (3600 * 24))); if(days) seconds -= days * 3600 * 24; ...
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How can I create a copy of an object in Python?

...would like to create a copy of an object. I want the new object to possess all properties of the old object (values of the fields). But I want to have independent objects. So, if I change values of the fields of the new object, the old object should not be affected by that. ...
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What's the UIScrollView contentInset property for?

... answered Dec 31 '09 at 1:21 jballjball 23.1k88 gold badges6464 silver badges9191 bronze badges ...
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What's the difference between using CGFloat and float?

I tend to use CGFloat all over the place, but I wonder if I get a senseless "performance hit" with this. CGFloat seems to be something "heavier" than float, right? At which points should I use CGFloat, and what makes really the difference? ...
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Search text in stored procedure in SQL Server

I want to search a text from all my database stored procedures. I use the below SQL: 22 Answers ...
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Difference between .tagName and .nodeName

... The tagName property is meant specifically for element nodes (type 1 nodes) to get the type of element. There are several other types of nodes as well (comment, attribute, text, etc.). To get the name of any of the various node types, you can use the nodeName p...
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sqlite3.ProgrammingError: Incorrect number of bindings supplied. The current statement uses 1, and t

...ijn Pieters♦Martijn Pieters 839k212212 gold badges32183218 silver badges28092809 bronze badges ...
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Unable to hide welcome screen in Emacs

...r-open. – viam0Zah Apr 13 '09 at 18:32 add a comment  |  ...
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List of strings to one string

...n fact if you look at Reflector, you'll see that unsafe code was used to really optimize it. The other two also WORK, but I think the Join function was written for this purpose, and I would guess, the most efficient. I could be wrong though... As per @Nuri YILMAZ without .ToArray(), but this is .NE...
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Getting indices of True values in a boolean list

...ode where I'm supposed to create a switchboard. I want to return a list of all the switches that are on. Here "on" will equal True and "off" equal False . So now I just want to return a list of all the True values and their position. This is all I have but it only return the position of the fir...