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Convert String to Float in Swift

...or some reason you can use Float(Wage.text) ?? 0 which will return 0 if it is not a valid Float. Old Solution The best way to handle this is direct casting: var WageConversion = (Wage.text as NSString).floatValue I actually created an extension to better use this too: extension String { ...
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How to capture UIView to UIImage without loss of quality on retina display

...ImageContext to UIGraphicsBeginImageContextWithOptions (as documented on this page). Pass 0.0 for scale (the third argument) and you'll get a context with a scale factor equal to that of the screen. UIGraphicsBeginImageContext uses a fixed scale factor of 1.0, so you're actually getting exactly the...
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How to SSH to a VirtualBox guest externally through a host? [closed]

... The best way to login to a guest Linux VirtualBox VM is port forwarding. By default, you should have one interface already which is using NAT. Then go to the Network settings and click the Port Forwarding button. Add a new Rule. As the rule name, insert "ssh". As "Host port", ...
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“Eliminate render-blocking CSS in above-the-fold content”

... A related question has been asked before: What is “above-the-fold content” in Google Pagespeed? Firstly you have to notice that this is all about 'mobile pages'. So when I interpreted your question and screenshot correctly, then this is not for your site! On the con...
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Update Item to Revision vs Revert to Revision

I've started to use Subversion with TortoiseSVN. If I open up the log and right click on an old revision I see two options that sound like they roll back to an older version: "Update item to revision" and "Revert to this revision". ...
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Javascript equivalent of Python's zip function

Is there a javascript equivalent of Python's zip function? That is, given multiple arrays of equal lengths create an array of pairs. ...
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Python list iterator behavior and next(iterator)

... What you see is the interpreter echoing back the return value of next() in addition to i being printed each iteration: >>> a = iter(list(range(10))) >>> for i in a: ... print(i) ... next(a) ... 0 1 2 3 4 5 6 7 8 ...
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Set title background color

... This thread will get you started with building your own title bar in a xml file and using it in your activities Edit Here is a brief summary of the content of the link above - This is just to set the color of the text and the...
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entity object cannot be referenced by multiple instances of IEntityChangeTracker. while adding relat

...ch has references with City. But everytime I try to save my contact, which is validated I get the exception "ADO.Net Entity Framework An entity object cannot be referenced by multiple instances of IEntityChangeTracker" ...
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How do I export UIImage array as a movie?

...I have an NSArray with several UIImage objects. What I now want to do, is create movie from those UIImages . But I don't have any idea how to do so. ...