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Swift: Testing optionals for nil
I'm using Xcode 6 Beta 4. I have this weird situation where I cannot figure out how to appropriately test for optionals.
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Display Animated GIF
...lass.
This is not too much documented, but is in SDK Reference. Moreover, it is used in Samples in ApiDemos in BitmapDecode example with some animated flag.
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Which one is the best PDF-API for PHP? [closed]
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personally i'd rather go with tcpdf which is an ehnanced and mantained version of fpdf.
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rsync: how can I configure it to create target directory on server?
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If you have more than the last leaf directory to be created, you can either run a separate ssh ... mkdir -p first, or use the --rsync-path trick as explained here :
rsync -a --rsync-path="mkdir -p /tmp/x/y/z/ && rsync" $source user@remote:/tmp/x/y/z/
Or use the --relative option as s...
Difference between “@id/” and “@+id/” in Android
...refer to Android resources , which are already defined in Android system, with @android:id/.. while to access resources that you have defined/created in your project, you use @id/..
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As per your clarifications in the chat, you said you have a problem like this :
If we use android:id="...
What's the best CRLF (carriage return, line feed) handling strategy with Git?
I tried committing files with CRLF-ending lines, but it failed.
9 Answers
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How to remove the arrow from a select element in Firefox
...yle a select element using CSS3. I'm getting the results I desire in WebKit (Chrome / Safari), but Firefox isn't playing nicely (I'm not even bothering with IE). I'm using the CSS3 appearance property, but for some reason I can't shake the drop-down icon out of Firefox.
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How do I generate random number for each row in a TSQL Select?
..., the following code generates a random number between 0 and 13 inclusive with a uniform distribution:
ABS(CHECKSUM(NewId())) % 14
To change your range, just change the number at the end of the expression. Be extra careful if you need a range that includes both positive and negative numbers. If y...
How to check if a variable is an integer in JavaScript?
...o I check if a variable is an integer in JavaScript, and throw an alert if it isn't? I tried this, but it doesn't work:
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File changed listener in Java
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At the low level the only way to model this utility is to have a thread polling on a directory and keeping a watch on the attributes of the file. But you can use patterns to develop a adapter for such a utility.
For example j2ee application servers like Tomcat and others ...