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Check empty string in Swift?
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You can also use isEqualToString, which comes in handy if you're initializing the var with NSString ('var emptyString: NSString'): emptyString.isEqualToString("")
– Sven
Sep 17 '14 at 19:17
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How to close tag properly?
...wer above will fail to validate with the W3C's HTML checker if targeting 4.01 Transitional and higher. Also see W3C Markup Validation Service. I believe the answer above requires HTML5 or XHTML. To avoid validation failures, you need to use the one <img src='stackoverflow.png'> (if it matters ...
Run cron job only if it isn't already running
... This wheel was already invented somewhere else :) E.g., serverfault.com/a/82863/108394
– Filipe Correia
Jun 8 '13 at 2:27
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How does origin/HEAD get set?
...u clone a repository, and that's about it. Bizarrely, that it's not set by commands like git remote update - I believe the only way it will change is if you manually change it. (By change I mean point to a different branch; obviously the commit it points to changes if that branch changes, which migh...
jQuery Tips and Tricks
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community wiki
6 revs, 4 users 47%Andreas Grech
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What is makeinfo, and how do I get it?
...If you build packages from scratch:
Download a version from here: http://www.gnu.org/software/texinfo/
As of writing, version 5.2 is the latest.
Learn how to build here: http://www.linuxfromscratch.org/lfs/view/stable/chapter05/texinfo.html
LFS project is constantly updating, but texinfo build/...
How can I change the current URL?
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<script>
var url= "http://www.google.com";
window.location = url;
</script>
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How do you know a variable type in java?
... OP was really looking for since the declaration of a is pretty obvious at compile time
– Martin
Apr 20 '10 at 11:22
4
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Location of sqlite database on the device
...tor of the class. Some answers after this one (exactly here: stackoverflow.com/a/21832714/2982814), you will find how I managed this.
– RandomUser
Feb 6 '17 at 10:49
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