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What is a lambda expression in C++11?
...and {} the function body.
The capture list
The capture list defines what from the outside of the lambda should be available inside the function body and how.
It can be either:
a value: [x]
a reference [&x]
any variable currently in scope by reference [&]
same as 3, but by value [=]
You...
Different bash prompt for different vi editing mode?
...
Fresh bash 4.3 and readline 6.3 have something for you guys.. from the changelog:
4. New Features in Readline
j. New user-settable variable, show-mode-in-prompt, adds a characters to the
beginning of the prompt indicating the current editing mode.
So putting
set show-mode-in-p...
Capturing standard out and error with Start-Process
...lock if the stream buffer gets filled up (since it doesn't attempt to read from it until the process has exited)
– James Manning
Jun 13 '13 at 5:29
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...
Conditionally ignoring tests in JUnit 4
...auses the test to be ignored.
Edit: To compare with the @RunIf annotation from junit-ext, their sample code would look like this:
@Test
public void calculateTotalSalary() {
assumeThat(Database.connect(), is(notNull()));
//test code below.
}
Not to mention that it is much easier to captur...
Hand Coded GUI Versus Qt Designer GUI [closed]
... If more functionality is needed, created a new class that either inherits from the generated class or includes it as a member and adds the needed code.
– Parker Coates
Dec 29 '08 at 20:30
...
Change default app.config at runtime
... solution based on reflection (not very nice though)
Create class derived from IInternalConfigSystem
public class ConfigeSystem: IInternalConfigSystem
{
public NameValueCollection Settings = new NameValueCollection();
#region Implementation of IInternalConfigSystem
public object GetSe...
Allow anything through CORS Policy
...is whole CORS mess only happens when your hitting your production back-end from a localhost application, right? None of this will happen when everything is in production?
– Sebastialonso
Dec 8 '14 at 14:39
...
What are C++ functors and their uses?
...
Little addition. You can use boost::function, to create functors from functions and methods, like this:
class Foo
{
public:
void operator () (int i) { printf("Foo %d", i); }
};
void Bar(int i) { printf("Bar %d", i); }
Foo foo;
boost::function<void (int)> f(foo);//wrap functor
f(...
Do HTML WebSockets maintain an open connection for each client? Does this scale?
...s (http.sys) is IOCP oriented and very efficient (running in kernel mode). From this point of view, there won't be a lot of difference at scaling between WebSockets and regular HTTP connection. One TCP/IP connection uses a little resource (much less than a thread), and modern OS are optimized for ha...
difference between socket programming and Http programming
...basically means that HTTP itself can't be used to transport information to/from a remote end point. Instead it relies on an underlying protocol which in HTTP's case is TCP.
You can read more about OSI layers if you are interested.
Sockets on the other hand are an API that most operating systems ...