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Android: Storing username and password?
...the frequency of asking for user
credentials -- to make phishing attacks more conspicuous, and less
likely to be successful. Instead use an authorization token and
refresh it.
Where possible, username and password should not be stored on the
device. Instead, perform initial authenticati...
What does “dereferencing” a pointer mean?
...irst byte? Well, we'll get to that later - see null pointers below.
For a more accurate definition of what pointers store, and how memory and addresses relate, see "More about memory addresses, and why you probably don't need to know" at the end of this answer.
When you want to access the data/va...
What exactly is Apache Camel?
...n open source Java framework that focuses on making integration easier and more accessible to developers. It does this by providing:
concrete implementations of all the widely used Enterprise Integration Patterns (EIPs)
connectivity to a great variety of transports and APIs
easy to use D...
MySQL: Quick breakdown of the types of joins [duplicate]
...zag's mySQL tutorials. You can also check out Keith J. Brown's website for more information on joins that is quite good also.
I hope this helps you
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How to scale down a range of numbers with a known min and max value
...ead we want to get arbitrary values of a and b, we need something a little more complicated:
(b-a)(x - min)
f(x) = -------------- + a
max - min
You can verify that putting in min for x now gives a, and putting in max gives b.
You might also notice that (b-a)/(max-min) is a scal...
Maintain the aspect ratio of a div with CSS
...lute;
top: 0; bottom: 0; left: 0; right: 0;
}
Here's a demo and another more in depth demo
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How can I create directories recursively? [duplicate]
... for help. I always was using os.mkdir which didn't make grandchildren and more nested children. os.makedirs just solved my problem
– Hamed_gibago
Apr 14 at 7:09
3
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Firing events on CSS class changes in jQuery
...</div>
<button class="clickme">Click me</button>
More info on jQuery Triggers
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Why can't I define a static method in a Java interface?
...These features are part of the lambda expression support, and you can read more about them in Part H of JSR 335.
Overriding static methods
The answer to the second question is a little more complicated.
Static methods are resolvable at compile time. Dynamic dispatch makes sense for instance metho...
Polymorphism in C++
... using, the above mechanisms, and
explanation is a fiddly distraction from more important concepts.
Terminology
Further categorisation
Given the polymorphic mechanisms above, we can categorise them in various ways:
When is the polymorphic type-specific code selected?
Run time means the compi...