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Why do we use __init__ in Python classes?
...nd inherit some abstract characteristics and behavior from the human type (base-class) : that's inheritance. So all Humans can laugh and drink, therefore all child-classes can also! Inheritance (2).
But because they are all of the same kind (Type/base-class : Humans) you can exchange them sometimes...
What's the difference between assignment operator and copy constructor?
...arguments and then assignment operator is used and new values are assigned based on RHS. In case copy constructor is used, still same constructor will be called, but values used for initialization is from other object.
– Rajesh
Mar 17 '18 at 3:40
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How do I move to end of line in Vim?
...re-pending the up and down commands with g make vim move the cursor screen-based, rather than line-based. I.e. gj and gk allow you to move up and down on a long line. Really useful.
– Druckles
Apr 11 '12 at 17:29
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Finding the type of an object in C++
... a bad_cast exception.
Make sure there is at least one virtual function in Base class to make dynamic_cast work.
Wikipedia topic Run-time type information
RTTI is available only for classes that are polymorphic, which means
they have at least one virtual method. In practice, this is not a
limitatio...
C# Ignore certificate errors?
.../ Sometime when requesting Data and the sending Webserverconnection
/// is based on a SSL Connection, an Error is caused by Servers whoes
/// Certificate(s) have Errors. Like when the Cert is out of date
/// and much more... So at this point when calling the method,
/// this behaviour is prevented
/...
How can I get nth element from a list?
... list), lists may in fact not be the proper data structure. For O(1) index-based access there are more efficient alternatives, such as arrays or vectors.
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Get current domain
... | Joomla, Drupal/Symfony |
| The database | WordPress |
| An environmental variable | Laravel ...
Where is my Django installation?
...sconfig import get_python_lib; print get_python_lib()"
This gives you the base directory. From there, type /django/ and here you find all the default templates, admin templates, etc.
Hope this helps...
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Is there a unique Android device ID?
...l only work "some" of the time, and unfortunately, that's not good enough.
Based on my tests of devices (all phones, at least one of which is not activated):
All devices tested returned a value for TelephonyManager.getDeviceId()
All GSM devices (all tested with a SIM) returned a value for Telephony...
How to run cron once, daily at 10pm
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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