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Using Vim's persistent undo?
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Put this in your .vimrc to create an undodir if it doesn't exist and enable persistent undo. Tested on both Windows and Linux.
" Put plugins and dictionaries in this dir (also on Windows)
let vimDir = '$HOME/.vim'
let &runtimepath.=','.vimDir
" Keep undo history across sessions by st...
JSON parsing using Gson for Java
...the use more generic - you will find that Gson's javadocs are pretty clear and helpful.
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Escaping a forward slash in a regular expression
My question is a simple one, and it is about regular expression escaping. Do you have to escape a forward slash / in a regular expression? And how would you go about doing it?
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Convert int to string?
...se type safety. myInt could be anything. Nothing here says take an integer and convert it to a string. myInt could be an object and an object can't be converted to a string. That's known at compile time, but it wouldn't even raise a runtime exception it would just allow bad data.
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Rails 3 migrations: Adding reference column?
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EDIT: This is an outdated answer and should not be applied for Rails 4.x+
You don't need to add references when you can use an integer id to your referenced class.
I'd say the advantage of using references instead of a plain integer is that the model will ...
Why an abstract class implementing an interface can miss the declaration/implementation of one of th
... try making a subclass of AbstractThing without implementing the m2 method and see what errors the compiler gives you. It will force you to implement this method.
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form serialize javascript (no framework)
...cript without jquery or any framework that allows me to serialize the form and access the serialized version?
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Why does pycharm propose to change method to static
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PyCharm proposes this because the method does not use self in its body and hence does not actually change the class instance. Hence the method could be static, i.e. callable without passing a class instance or without even having created a class instance.
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Plotting with seaborn using the matplotlib object-oriented interface
...wo classes
"Axes-level" functions, including regplot, boxplot, kdeplot, and many others
"Figure-level" functions, including lmplot, factorplot, jointplot and one or two others
The first group is identified by taking an explicit ax argument and returning an Axes object. As this suggests, you can...
“Default Activity Not Found” on Android Studio upgrade
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If you see that error occur after upgrading versions of IntelliJ IDEA or Android Studio, or after Generating a new APK, you may need to refresh the IDE's cache.
File -> Invalidate Caches / Restart...
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