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Why is it necessary to set the prototype constructor?
... specification referred to it at all.
That changed in ES2015 (ES6), which started using it in relation to inheritance hierarchies. For instance, Promise#then uses the constructor property of the promise you call it on (via SpeciesConstructor) when building the new promise to return. It's also invol...
Design Patterns web based applications [closed]
...eed to pass the request object to the service layer.
I would not, though, start writing raw Servlet classes. The work they do is very predictable and boilerplate, something that framework does very well. Fortunately, there are many available, time-tested candidates ( in the alphabetical order ): A...
How can I profile C++ code running on Linux?
... Great tool! Is there anyway for me to get a typical "butterfly" view that starts from "main->func1->fun2" style? I can't seem to figure that out... perf report seems to give me the function names with the call parents... (so it's sort of an inverted butterfly view)
– kiz...
Is Python strongly typed?
...esn't let you do this; if you call the reduce function that doesn't take a start value on an empty list, you get an error. But its type system is powerful enough that you could make this work, and Python's isn't.
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Representing graphs (data structure) in Python
How can one neatly represent a graph in Python ? (Starting from scratch i.e. no libraries!) What data structure (e.g. dicts/tuples/dict(tuples)) will be fast but also memory efficient? One must be able to do various graph operations on it.
As pointed out, the various graph representations...
Use of var keyword in C#
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I have no desire to start a religious war, but I personnaly tend to disagree with Ion. I would much prefer a very long, but very precise type name (ala Uncle Bob Martin) than an abbreviated and possibly ambiguous shorter type name. I will add ...
How can I view the source code for a function?
...the function. This GitHub mirror of the R source code is a decent place to start. The function pryr::show_c_source can be a useful tool as it will take you directly to a GitHub page for .Internal and .Primitive calls. Packages may use .C, .Call, .Fortran, and .External; but not .Internal or .Primiti...
How to apply multiple styles in WPF
...ned from this method will be set in the target of the markup extension.
I started by creating an extension method for Style that knows how to merge two styles. The code for this method is quite simple:
public static void Merge(this Style style1, Style style2)
{
if (style1 == null)
{
...
Tying in to Django Admin's Model History
...e from Marty Alchin in his book Pro Django (see Keeping Historical Records starting at page 263). There is an application django-simple-history which implements and extends this approach (docs here).
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Android: install .apk programmatically [duplicate]
...android.package-archive");
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
startActivity(intent);
That is correct now, my auto-update is working. Thanks for help. =)
Edit 20.7.2016:
After a long time, I had to use this way of updating again in another project. I encountered a number of problems...