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Removing a model in rails (reverse of “rails g model Title…”)
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It removes all, but it do not create downgrade migration or something.
– mr.The
Feb 12 '14 at 18:10
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C++ “virtual” keyword for functions in derived classes. Is it necessary?
...them other than that the first approach requires more typing and is potentially clearer.
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?? Coalesce for empty string?
...d make your extension method return a string or null, however, which would allow the coalescing operator to work. This would be odd, however, and I personally prefer your current approach.
Since you're already using an extension method, why not just make one that returns the value or a default:
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How would I get a cron job to run every 30 minutes?
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I've always used */30 with success but I don't recall an application of mine where it was too critical if it only ran once an hour so I don't think I've ever checked.
– Adam Hawes
Feb 25 '09 at 5:39
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Why does writeObject throw java.io.NotSerializableException and how do I fix it?
...re not any variables that store them. My app is a 3d molecule builder, and all my atoms and bounds are just added to the TransformGroup as instances- e.g (new Atom()). The problem is not only that I need them written to a file, but that the user may want to remove or edit current objects. I think I ...
How do you plot bar charts in gnuplot?
...plications it's more convenient to use the histogram plotting style, especially for grouping and stacking values.
– Christoph
Feb 1 '15 at 14:18
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How can I add the new “Floating Action Button” between two widgets/layouts
...out_height or margin values, which could vary in time or be defined dynamically. Hugh's answer could work in some simple cases, and perhaps could be a workaround for some third-party libraries that don't fully support CoordinatorLayout and layout_anchor and layout_anchorGravity features, like the on...
XML schema or DTD for logback.xml?
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It is not supported officially according to the documentation, but there is an independent project to provide Schema for Logback
However, due to extreme flexibility of the Logback configuration, Schema cannot support all possible configuration option...
How to resize an image to fit in the browser window?
This seems trivial but after all the research and coding I can't get it to work. Conditions are:
14 Answers
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CSS3 Continuous Rotate Animation (Just like a loading sundial)
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A typical copy-paste error. Thanks a lot! (I actually got my css from shareaholic and because of the wrongly named property, it used the default ease timing function).
– doekman
Feb 15 '12 at 21:24
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