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What techniques can be used to define a class in JavaScript, and what are their trade-offs?
...ere is no such thing as classes in JavaScript. JavaScript uses a prototype-based inheritance scheme.
In addition, there are numerous popular JavaScript libraries that have their own style of approximating class-like functionality in JavaScript. You'll want to check out at least Prototype and jQue...
Rails 3 execute custom sql query without a model
I need to write a standalone ruby script that is supposed to deal with database. I used code given below in rails 3
5 Answe...
How to make my custom type to work with “range-based for loops”?
...he different features that C++11 brings. One of my favorites is the "range-based for loops".
8 Answers
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Difference between a virtual function and a pure virtual function [duplicate]
...
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();
...
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...