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How to understand nil vs. empty vs. blank in Ruby
I find myself repeatedly looking for a clear definition of the differences of nil? , blank? , and empty? in Ruby on Rails. Here's the closest I've come:
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How do I create a SQL table under a different schema?
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Right-click on the tables node and choose New Table...
With the table designer open, open the properties window (view -> Properties Window).
You can change the schema that the table will be made in by choosing a schema in the proper...
setResult does not work when BACK button pressed
I am trying to setResult after the BACK button was pressed. I call in onDestroy
10 Answers
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How to use ternary operator in razor (specifically on HTML attributes)?
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<a class="@(User.Identity.IsAuthenticated ? "auth" : "anon")">My link here</a>
I don't have Razor installed, though, so I could be wrong.
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Difference between “!==” and “==!” [closed]
...se. I was baffled that a simple comparison ( if ($var ==! " ") ) didn't work as expected. After some testing I realized that whoever wrote that code used ==! instead of !== as comparison operator. I've never seen ==! in any language so I wondered how the hell this code could even work and did ...
Get controller and action name from within controller?
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AndreiAndrei
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Custom Cell Row Height setting in storyboard is not responding
...ed Mar 27 '12 at 21:49
pixelfreakpixelfreak
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How to do version numbers? [closed]
... Should the build date be in the version number? Tell me what you guys think!
18 Answers
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How do I cast a string to integer and have 0 in case of error in the cast with PostgreSQL?
...f you want zeros instead of not selecting, then a CASE statement should work:
SELECT CASE WHEN myfield~E'^\\d+$' THEN myfield::integer ELSE 0 END FROM mytable;
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Does Python have a package/module management system?
Does Python have a package/module management system, similar to how Ruby has rubygems where you can do gem install packagename ?
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