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Abstract Class vs Interface in C++ [duplicate]
...structure code and behavior, and make it possible to client code to derive from this abstract class, overriding the pure virtual methods with some custom code, and complete this behavior with custom code.
Think for example of an infrastructure for an OpenGL application.
You can define an abstract cl...
Open-sided Android stroke?
...ion="1.0" encoding="UTF-8"?>
<!-- inset is used to remove border from top, it can remove border from any other side-->
<inset xmlns:android="http://schemas.android.com/apk/res/android"
android:insetTop="-2dp"
>
<shape xmlns:android="http://schemas.androi...
“unpacking” a tuple to call a matching function pointer
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@Xeverous: 1. doesn't work from the signatures: your std::make_unique expects a tuple, and a tuple can be created from an unpacked tuple only via another call to std::make_tuple. This is what I've done in the lambda (although it's highly redundant, as ...
What is the difference between a cer, pvk, and pfx file?
...ge public and private objects in a single file. A pfx file can be created from .cer file. Can also be used to create a Software Publisher Certificate.
I summarized the info from the page based on the suggestion from the comments.
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Mercurial move changes to a new branch
...3 # convert revisions to patches
hg qpop -a # remove all them from history
hg branch new # start a new branch
hg qpush -a # push them all back into history
hg qfin -a # finalize the patches
...
Are (non-void) self-closing tags valid in HTML5?
...nt elements to be children instead of siblings.
Foreign elements (imported from XML applications such as SVG) treat it as self-closing syntax.
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One-liner to check whether an iterator yields at least one element?
...oblem with this solution is that you can't actually use the returned value from the iterator if it's not empty, right?
– Ken Williams
Jan 3 '17 at 3:55
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How can I properly handle 404 in ASP.NET MVC?
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The code is taken from http://blogs.microsoft.co.il/blogs/shay/archive/2009/03/06/real-world-error-hadnling-in-asp-net-mvc-rc2.aspx and works in ASP.net MVC 1.0 as well
Here's how I handle http exceptions:
protected void Application_Error(o...
store and retrieve a class object in shared preference
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Yes we can do this using Gson
Download Working code from GitHub
SharedPreferences mPrefs = getPreferences(MODE_PRIVATE);
For save
Editor prefsEditor = mPrefs.edit();
Gson gson = new Gson();
String json = gson.toJson(myObject); // myObject - instance of MyObject
prefsEdito...
When do I need to use AtomicBoolean in Java?
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Here is the notes (from Brian Goetz book) I made, that might be of help to you
AtomicXXX classes
provide Non-blocking Compare-And-Swap implementation
Takes advantage of the support provide
by hardware (the CMPXCHG instruction
on Intel) When ...