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NoSQL - MongoDB vs CouchDB [closed]
...ries are javascript expressions
Run arbitrary javascript functions server-side
Has geospatial indexing and queries
Multiple storage engines with different performance characteristics
Performance over features
Document validation
Journaling
Powerful aggregation framework
On 32bit systems, limited to ...
How do function pointers in C work?
...onPtr)(2, 3); // sum == 5
Passing the pointer to another function is basically the same:
int add2to3(int (*functionPtr)(int, int)) {
return (*functionPtr)(2, 3);
}
We can use function pointers in return values as well (try to keep up, it gets messy):
// this is a function called functionFa...
What's the difference between a mock & stub?
...n in memory database is a good example).
Stubs provide canned answers to calls made during the test, usually not responding at all to anything outside what's programmed in for the test. Stubs may also record information about calls, such as an email gateway stub that remembers the messages it 'sen...
Abstract classes in Swift Language
...t importantly, notice that there is no dynamic dispatch. When logSalary is called on the instance that is stored as a SoftwareEngineer it calls the overridden version of the method. When logSalary is called on the instance after it has been cast to an Employee, it calls the original implementation (...
How can I get Express to output nicely formatted HTML?
...ersions of Express. I've searched for other issues and found answers that didn't mention what version of Express it was for.
– SnowInferno
Oct 8 '14 at 22:33
...
Is there a way to check if int is legal enum in C#?
...mple
{
public static void Main()
{
object value;
// Call IsDefined with underlying integral value of member.
value = 1;
Console.WriteLine("{0}: {1}", value, Enum.IsDefined(typeof(PetType), value));
// Call IsDefined with invalid underlying integral value.
...
Default value to a parameter while passing by reference in C++
... d.f1 (); // '10' used
b.f1 (); // '0' used
d.f2 (); // f1(int) called with '0'
b.f2 (); // f1(int) called with '0
}
There is only one situation where a default really needs to be used, and that is on a constructor. It is not possible to call one constructor from another, and so t...
nodeJs callbacks simple example
can any one give me a a simple example of nodeJs callbacks, I have already searched for the same on many websites but not able to understand it properly, Please give me a simple example.
...
Why do std::shared_ptr work
...
The trick is that std::shared_ptr performs type erasure. Basically, when a new shared_ptr is created it will store internally a deleter function (which can be given as argument to the constructor but if not present defaults to calling delete). When the shared_ptr is destroyed, it calls...
system(“pause”); - Why is it wrong?
...
It's slow. It's platform dependent. It's insecure.
First: What it does. Calling "system" is literally like typing a command into the windows command prompt. There is a ton of setup and teardown for your application to make such a call - and the overhead is simply ridiculous.
What if a program ca...