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How to parse JSON in Python?
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For example, you can't parse r'{"foo": null, "bar": true, "baz": "\ud83e\udd26"}' using ast.literal_eval(), because it contains nulls, a boolean value, and a single non-BMP codepoint. JSON represents those values differently from how Python literals would re...
Fastest way to remove first char in a String
...e second option really isn't the same as the others - if the string is "///foo" it will become "foo" instead of "//foo".
The first option needs a bit more work to understand than the third - I would view the Substring option as the most common and readable.
(Obviously each of them as an individual...
What's the purpose of git-mv?
From what I understand, Git doesn't really need to track file rename/move/copy operations, so what's the real purpose
of git mv ? The man page isn't specially descriptive...
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Is Hash Rocket deprecated?
... I can't find any definitive reference stating the Hash Rocket form is actually deprecated/unadvised as of Ruby 1.9.
1 Answ...
C# string reference type?
...iables pointing to the string. And because any operations with strings actually create a new object, we make our local copy to point to the new string. But the original test variable is not changed.
The suggested solutions to put ref in the function declaration and in the invocation work because we...
What is the Git equivalent for revision number?
...e SVN at work, but for my personal projects I decided to use Git. So I installed Git yesterday, and I wonder what is the revision number equivalent in Git .
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GroupBy pandas DataFrame and select most common value
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@JoshFriedlander Define def foo(x): m = pd.Series.mode(x); return m.values[0] if not m.empty else np.nan and then use df.groupby(cols).agg(foo). If that doesn't work, fiddle with the implementation of foo for a bit. If you're still having starting troub...
Rails: How to list database tables/objects using the Rails console?
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To get a list of all model classes, you can use ActiveRecord::Base.subclasses e.g.
ActiveRecord::Base.subclasses.map { |cl| cl.name }
ActiveRecord::Base.subclasses.find { |cl| cl.name == "Foo" }
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What is Node.js' Connect, Express and “middleware”?
...t offers a createServer method that extends Connect's Server prototype. So all of the functionality of Connect is there, plus view rendering and a handy DSL for describing routes. Ruby's Sinatra is a good analogy.
Then there are other frameworks that go even further and extend Express! Zappa, for in...
What is the difference between call and apply?
What is the difference between using call and apply to invoke a function?
24 Answers
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