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What is the difference between MVC and MVVM? [closed]
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MVC/MVVM is not an either/or choice.
The two patterns crop up, in different ways, in both ASP.Net and Silverlight/WPF development.
For ASP.Net, MVVM is used to two-way bind data within views. This is usually a client-side implementation (e.g. us...
Why do most fields (class members) in Android tutorial start with `m`?
I know about camel case rules, but I'm confused with this m rule. What does it stand for? I'm a PHP developer. "We" use first letters of variables as indication of type, like 'b' for boolean, 'i' for integer and so on.
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How to parse a string to an int in C++?
...at: stoi, stol, stoll, stoul and so on.
int myNr = std::stoi(myString);
It will throw an exception on conversion error.
Even these new functions still have the same issue as noted by Dan: they will happily convert the string "11x" to integer "11".
See more: http://en.cppreference.com/w/cpp/stri...
Why 0 is true but false is 1 in the shell?
The above will output 1 , which is contradictory with all other programming languages I know.
10 Answers
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Unnamed/anonymous namespaces vs. static functions
A feature of C++ is the ability to create unnamed (anonymous) namespaces, like so:
11 Answers
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Which HTML elements can receive focus?
I'm looking for a definitive list of HTML elements which are allowed to take focus, i.e. which elements will be put into focus when focus() is called on them?
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How to change the session timeout in PHP?
...lutely certain that no session ever will survive after X minutes of inactivity.
If relaxing this requirement a little is acceptable and you are fine with placing a lower bound instead of a strict limit to the duration, you can do so easily and without writing custom logic.
Convenience in relaxed env...
What does the Q_OBJECT macro do? Why do all Qt objects need this macro?
I just started using Qt and noticed that all the example class definitions have the macro Q_OBJECT as the first line. What is the purpose of this preprocessor macro?
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What's the Hi/Lo algorithm?
What's the Hi/Lo algorithm?
5 Answers
5
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C: What is the difference between ++i and i++?
...eing incremented.
i = 1;
j = i++;
(i is 2, j is 1)
For a for loop, either works. ++i seems more common, perhaps because that is what is used in K&R.
In any case, follow the guideline "prefer ++i over i++" and you won't go wrong.
There's a couple of comments regarding the efficiency of +...