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Which kind of pointer do I use when?
Ok, so the last time I wrote C++ for a living, std::auto_ptr was all the std lib had available, and boost::shared_ptr was all the rage. I never really looked into the other smart pointer types boost provided. I understand that C++11 now provides some of the types boost came up with, but not all ...
What and where are the stack and heap?
...set aside as scratch space for a thread of execution. When a function is called, a block is reserved on the top of the stack for local variables and some bookkeeping data. When that function returns, the block becomes unused and can be used the next time a function is called. The stack is always ...
Get selected option from select element
...ted elements use
$("select option:selected").length
To Get the value of all selected elements use
var str = "";
$("select option:selected").each(function () {
str += $(this).text() + " ";
});
share
...
JavaScript validation for empty input field
I have this input field
<input name="question"/> I want to call IsEmpty function when submit clicking submit button.
...
How to detect Ctrl+V, Ctrl+C using JavaScript?
...paste"></textarea>
<br><br>
<h3>Ctrl+c Ctrl+v allowed</h3>
<textarea></textarea>
Also just to clarify, this script requires the jQuery library.
Codepen demo
EDIT: removed 3 redundant lines (involving e.which) thanks to Tim Down's suggestion (s...
What is a bank conflict? (Doing Cuda/OpenCL programming)
...ank 2, ..., 64-69 in bank 1 and so on). For a better visualization it basically looks like this:
Bank | 1 | 2 | 3 |...
Address | 0 1 2 3 | 4 5 6 7 | 8 9 10 11 |...
Address | 64 65 66 67 | 68 69 70 71 | 72 73 74 75 |...
...
So if each thread in a halfwarp...
Java Naming Convention with Acronyms [closed]
...tion is not always followed in Java. Four character acronyms do seem to usually use mixed case, but even the JCL is not consistent about three letter acronyms. Most of them seem to be all uppercase, like 'URL', 'XML', 'SQL', and 'DOM', but there are some exceptions like 'Jar'.
Conclusion
For Java:...
Serialize an object to string
...(T) in XmlSerializer constructor: if you use the first one the code covers all possible subclasses of T (which are valid for the method), while using the latter one will fail when passing a type derived from T.
Here is a link with some example code that motivate this statement, with XmlSerializ...
Magic number in boost::hash_combine
The boost::hash_combine template function takes a reference to a hash (called seed ) and an object v . According to the docs , it combines seed with the hash of v by
...
Android Whatsapp/Chat Examples [closed]
...e to understand how chat applications are programmed.
There is a website called Scringo. These awesome people provide their own SDK which you can integrate in your existing application to exploit cool features like radaring, chatting, feedback, etc. So if you are looking to integrate chat in applic...