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How to get object length [duplicate]
... hasOwnProperty is there to make sure that you're only counting properties from the object literal, and not properties it "inherits" from its prototype.
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What is pip's equivalent of `npm install package --save-dev`?
...about a better pip workflow to better handle pip updates.
Edit 2
Linked from the "better pip workflow" article above it is now recommended to use pipenv to manage requirements and virtual environments. Having used this a lot recently I would like to summarise how simple the transition is:
Instal...
What does the Q_OBJECT macro do? Why do all Qt objects need this macro?
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From the Qt documentation:
The Meta-Object Compiler, moc, is the
program that handles Qt's C++
extensions.
The moc tool reads a C++ header file.
If it finds one or more class
declarations that contain the Q_O...
Swift performSelector:withObject:afterDelay: is unavailable [duplicate]
... Just a note that this method only works if your class inherits from an NSObject or derivative class. It won't work in a pure swift class.
– Jason Crump
Jul 31 '14 at 14:50
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Is it bad to have my virtualenv directory inside my git repository?
... we got bit in the past because somehow libraries are becoming unavailable from pip (version too old), forcing an upgrade while the site was down. so... I will now never rely on pip freeze again to do this. the issue is that during your forced upgrade redeploy, no one pays for it, and for intermedia...
Array include any value from another array?
What's the most efficient way to test if an array contains any element from a second array?
5 Answers
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How to print instances of a class using print()?
...ris Lutz mentioned, this is defined by the __repr__ method in your class.
From the documentation of repr():
For many types, this function makes an attempt to return a string that would yield an object with the same value when passed to eval(), otherwise the representation is a string enclosed i...
Current time in microseconds in java
...at ability.
It does have System.nanoTime(), but that just gives an offset from some previously known time. So whilst you can't take the absolute number from this, you can use it to measure nanosecond (or higher) precision.
Note that the JavaDoc says that whilst this provides nanosecond precision, ...
Formatting Phone Numbers in PHP
...g on an SMS app and need to be able to convert the sender's phone number from +11234567890 to 123-456-7890 so it can be compared to records in a MySQL database .
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How do I look inside a Python object?
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The answer from @Brian below shows you how to also view the source code of various python objects from within python. That is what I was originally searching for and I'm sure I won't be alone. (It might be worth including a reference to...