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Delete duplicate rows from small table
...s to do with the inner select statement here getting executed N times (for all N rows in the dupes table) rather than the grouping that's going on in the other solution.
– David
Sep 12 '17 at 12:36
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Converting Storyboard from iPhone to iPad
...d advice, thanks. While you're at it, you may also probably want to change all the width="320" to width="768", height="480" to height="1024", etc... directly from here. As it's much simpler than doing it element by element in IB.
– Ben G
Feb 6 '12 at 22:39
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When and why should I use fragments in Android applications? [duplicate]
...ntiating a fragment manager, adding the fragment transaction, writing the callbacks of the fragment)
Communication between fragments and activities is harder. As @jonney said it, you would need to deal with a parcelable interface to serialize your objects you wish to pass.
So, when deciding to use...
When is it appropriate to use C# partial classes?
...es is to make life easier for code generators / designers. Partial classes allow the generator to simply emit the code they need to emit and they do not have to deal with user edits to the file. Users are likewise free to annotate the class with new members by having a second partial class. This pr...
How do I migrate an SVN repository with history to a new Git repository?
I read the Git manual, FAQ, Git - SVN crash course, etc. and they all explain this and that, but nowhere can you find a simple instruction like:
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When to use nested classes and classes nested in modules?
...
As for your second observation, classes nested inside of modules are generally used to namespace the classes. For instance:
module ActiveRecord
class Base
end
end
differs from
module ActionMailer
class Base
end
end
Although this is not the only use of classes nested inside of modules,...
Java using enum with switch statement
...ting from the integer to the type-safe enum. Java will not do it automatically. There's a couple of ways you can go about this:
Use a list of static final ints rather than a type-safe enum and switch on the int value you receive (this is the pre-Java 5 approach)
Switch on either a specified id v...
When to use RSpec let()?
...sn't use any of the instance variables defined in the hook. This isn't usually a big deal, but if the setup of the instance variable takes a long time, then you're wasting cycles. For the method defined by let, the initialization code only runs if the example calls it.
You can refactor from a loca...
Windows 8.1 / Windows 10 breaks my ASP.NET / IIS : “Service unavailable”
With Windows 8.1 finally released to MSDN/Technet today I came across the following issue running my ASP.NET application after doing an in place upgrade with Win 8.1 RTM:
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ExecJS and could not find a JavaScript runtime
... cannot find a JavaScript runtime. Fair enough when I didn't have any installed, but I've tried installing Node.js , Mustang and the Ruby Racer , but nothing is working.
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