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C++ unordered_map using a custom class type as the key
...p; third == other.third);
}
};
Here is a simple hash function (adapted from the one used in the cppreference example for user-defined hash functions):
namespace std {
template <>
struct hash<Key>
{
std::size_t operator()(const Key& k) const
{
using std::size...
Timertask or Handler
...ndroid examples that I have seen is at Codepath. Here is a Handler example from there for a repeating task.
// Create the Handler object (on the main thread by default)
Handler handler = new Handler();
// Define the code block to be executed
private Runnable runnableCode = new Runnable() {
@Ove...
Is it a good practice to place C++ definitions in header files?
...umental waste of time (and is not the case for libraries that don't change from compile to compile). When you split things between header/source and better yet, use forward declarations to reduce includes, you can save hours of recompiling when added up across a day.
...
What is the difference between HTTP and REST?
...ost, with RPC you might create services called AddLikeToPost and RemoveLikeFromPost, and manage it along with all your other services related to FB posts, thus you won't need to create special object for Like.
with REST you will have a Like object which will be managed separately with Delete and Cr...
How do I do a HTTP GET in Java? [duplicate]
...s.
...
InputStream in = get.getResponseBodyAsStream();
// Process the data from the input stream.
get.releaseConnection();
and here is a more complete example.
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How to store printStackTrace into a string [duplicate]
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You can use the ExceptionUtils.getStackTrace(Throwable t); from Apache Commons 3 class org.apache.commons.lang3.exception.ExceptionUtils.
http://commons.apache.org/proper/commons-lang/
ExceptionUtils.getStackTrace(Throwable t)
Code example:
try {
// your code here
} catch(E...
var functionName = function() {} vs function functionName() {}
...s is a function expression:
var xyz = function(){};
xyz here is defined from the point of assignment:
// We can't call it here
xyz(); // UNDEFINED!!!
// Now it is defined
xyz = function(){}
// We can call it here
xyz(); // works
Function declaration vs. function expression is the real reason...
What is a handle in C++?
...
A handle can be anything from an integer index to a pointer to a resource in kernel space. The idea is that they provide an abstraction of a resource, so you don't need to know much about the resource itself to use it.
For instance, the HWND in the ...
Getting the first and last day of a month, using a given DateTime object
...t day and last day of the month where a given date lies in. The date comes from a value in a UI field.
15 Answers
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What is the purpose of using -pedantic in GCC/G++ compiler?
... @huahsin68: well, more or less. MSVC is a rather different compiler from most others, more adapted to its particular ecosystem and not available outside it. It does a lot of things its own way - which is not the same as the standard. Nevertheless, if you stay with the standard headers and s...