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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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Return a value if no rows are found in Microsoft tSQL

... S.Id = @SiteId and S.Status = 1 AND (S.WebUserId = @WebUserId OR S.AllowUploads = 1) share | improve this answer | follow | ...
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How can I check if a string represents an int, without using try/except?

... If you're really just annoyed at using try/excepts all over the place, please just write a helper function: def RepresentsInt(s): try: int(s) return True except ValueError: return False >>> pri...
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Rails raw SQL example

... and then you'd need to call values on this PG::Result object to get the results array – jobwat Mar 26 '14 at 1:00 3 ...
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How to process POST data in Node.js?

... The functionality is actually in the BodyParser module in connect, if you want to use a lower level entry point. – Julian Birch Jun 20 '11 at 6:59 ...
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Upgrading PHP in XAMPP for Windows?

...a backup of your htdocs and data folder (subfolder of MySQL folder), reinstall upgraded version and replace those folders. Note: In case you have changed config files like PHP (php.ini), Apache (httpd.conf) or any other, please take back up of those files as well and replace them with newly install...
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What's the difference between process.cwd() vs __dirname?

... Does this mean that process.cwd() is synonym to . for all cases except for require()? – Alexander Gonchiy Aug 29 '15 at 9:44 11 ...
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What is the meaning of “this” in Java?

Normally, I use this in constructors only. 21 Answers 21 ...
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How to use phpexcel to read data and insert into database?

...el_Cell::columnIndexFromString($sheet->getHighestColumn()); I am not infallible ` – Mark Baker Jun 16 '13 at 21:48 ...
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How to delete all Annotations on a MKMapView

Is there a simple way to delete all the annotations on a map without iterating through all the displayed annotations in Objective-c? ...