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Why do we need boxing and unboxing in C#?
...ot a reference to something somewhere (after all, it's just a number). So, what you do is this: you make a new object that can store the int and then you assign a reference to that object to o. We call this process "boxing."
So, if you don't care about having a unified type system (i.e., reference...
What blocks Ruby, Python to get Javascript V8 speed? [closed]
...
What blocks Ruby, Python to get Javascript V8 speed?
Nothing.
Well, okay: money. (And time, people, resources, but if you have money, you can buy those.)
V8 has a team of brilliant, highly-specialized, highly-experienced ...
What difference does .AsNoTracking() make?
...
see this page Entity Framework and AsNoTracking
What AsNoTracking Does
Entity Framework exposes a number of performance tuning options to help you optimise the performance of your applications. One of these tuning options is .AsNoTracking(). This optimisation allows you ...
Numpy matrix to array
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@Naijaba - For what it's worth, the matrix class is effectively (but not formally) depreciated. It's there mostly for historical purposes. Removing numpy.matrix is a bit of a contentious issue, but the numpy devs very much agree with you ...
What is this weird colon-member (“ : ”) syntax in the constructor?
...in C++.
Simply said, it initializes your member bar to a value num.
What is the difference between Initializing and Assignment inside a constructor?
Member Initialization:
Foo(int num): bar(num) {};
Member Assignment:
Foo(int num)
{
bar = num;
}
There is a significant difference b...
Python: Tuples/dictionaries as keys, select, sort
...ally, one of the things I love about python is the tuple-dict combination. What you have here is effectively a 2d array (where x = fruit name and y = color), and I am generally a supporter of the dict of tuples for implementing 2d arrays, at least when something like numpy or a database isn't more a...
What is the rationale behind having companion objects in Scala?
...lly that important)
with different possible sets of parameters (compare to what Bloch writes in Effective Java about telescoping constructor)
with the ability to to decide which derived class you want to create instead of the abstract (accompanied) one
Example code:
abstract class AbstractClass;
...
Why do you create a View in a database?
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3 Is really the most powerful property of views. It's what help provides logical data independence the fact that you can provide an interface to the DB independent of the underlying logical database is a very powerful concept.
– Falaina
Oct...
Why does PHP 5.2+ disallow abstract static class methods?
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OK, so what if I wanted to enforce the need for function getSelectSQL() in all children that extend my abstract class? getSelectSQL() in the parent class has no valid reason to exist. What's the best plan of action? The reason I cho...
In Markdown, what is the best way to link to a fragment of a page, i.e. #some_id?
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I guess this depends on what you're using to generate html from your markdown. I noticed, that jekyll (it's used by gihub.io pages by default) automatically adds the id="" attribute to headings in the html it generates.
For example if you're markdo...