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Difference between a virtual function and a pure virtual function [duplicate]
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A virtual function makes its class a polymorphic base class. Derived classes can override virtual functions. Virtual functions called through base class pointers/references will be resolved at run-time. That is, the dynamic type of the object is used instead of its static t...
C++ inheritance - inaccessible base?
I seem to be unable to use a base class as a function parameter, have I messed up my inheritance?
2 Answers
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In a git merge conflict, what are the BACKUP, BASE, LOCAL, and REMOTE files that are generated?
...the LOCAL and REMOTE files are just what their name suggests, but what are BASE and BACKUP for?
1 Answer
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What is the easiest way to duplicate an activerecord record?
... delegates to using Kernel#clone which will copy the id. Use ActiveRecord::Base#dup from now on
– bradgonesurfing
Aug 5 '11 at 13:57
5
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What is the relationship between the docker host OS and the container base image OS?
...ace directly within the host's kernel.
This is why you can run only Linux based distribution/binaries within the container. If you want to run something else, it is not impossible, but you would need some kind of virtualization within the container (qemu, kvm, etc.)
Docker manage images that are t...
Need to log asp.net webapi 2 request and response body to a database
... // let other handlers process the request
var result = await base.SendAsync(request, cancellationToken);
if (result.Content != null)
{
// once response body is ready, log it
var responseBody = await result.Content.ReadAsStringAsync();
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Creating a singleton in Python
... would recommend Method #2, but you're better off using a metaclass than a base class. Here is a sample implementation:
class Singleton(type):
_instances = {}
def __call__(cls, *args, **kwargs):
if cls not in cls._instances:
cls._instances[cls] = super(Singleton, cls).__c...
CSS selector based on element text? [duplicate]
Is there a way to select an element in css based on element text?
3 Answers
3
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How do I combine two data-frames based on two columns? [duplicate]
... but so far I don't know how to merge two dataframes with multiple columns based on 2 columns?
3 Answers
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Select Pandas rows based on list index
...d method for indexing. The ix method is deprecated. Use .iloc for integer based indexing and .loc for label based indexing.
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