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What are the differences between a pointer variable and a reference variable in C++?
...same variable." References may be passed to functions, stored in classes, etc. in a manner very similar to pointers. They exist independently from the variables they point to.
– Derek Park
Sep 12 '08 at 23:37
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Difference between a “coroutine” and a “thread”?
...ts assigned resources, like memory, file handles, sockets, device handles, etc., and these resources are all shared among its kernel threads.
The operating system scheduler is part of the kernel that runs each thread for a certain amount time (on a single processor machine). The scheduler allocates...
What's the right way to pass form element state to sibling/parent elements?
...ing deeply nested data, state validation, global state with setState hook, etc. There is also complete sample application online, which uses the Hookstate and the technique explained above.
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What is the lifetime of a static variable in a C++ function?
...s can be avoided with a little policy. static/global objects (singletons, etc) shall not access other static objects in their method bodies. They shall only accessed in constructors where a reference/pointer can be stored for later access in methods. This is not perfect but should fix 99 of the c...
How to structure a express.js application?
... @ErictheRed if you are familiar with the MVC Pattern (rails, Asp.Net mvc, etc) then I consider my Routes to be my controllers and everything kind of falls into place after that. Business logic goes in the models (although I am having difficulties with validation and mongoose). For helpers, I use ...
Pointers in C: when to use the ampersand and the asterisk?
...ument (just about any of the str* functions, *scanf and *printf functions, etc.).
In practice, you will probably never call a function with an array expression using the & operator, as in:
int arr[N];
...
foo(&arr);
void foo(int (*p)[N]) {...}
Such code is not very common; you have to...
Why does the C# compiler not fault code where a static method calls an instance method?
...find the best overload (checking only parameter number and parameter types etc., not static vs. non-static), and only then check for static. But that means that the static check has to wait until runtime. Hence the observed behavior.
Late addition: Some background on why they chose to do things thi...
How do you know what to test when writing unit tests? [closed]
...t has a username, password, active flag, first name, last name, full name, etc.
36 Answers
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How can I add to List
...Number > means ? could be of any type extending Number(Integer, Double, etc) and its not clearified in declaration ( List < ? extends Number > list ) that which of them it is, so when u wanna use add method its not known if the input is of the same type or not; what is the type at all?
So ...
SQL Server CTE and recursion example
...AS
(
SELECT 1 AS MyColName
-- Or
SELECT MyColName = 1
-- Etc...
)
Q 2) now here about CTE and recursion of employee relation
the moment i add two manager and add few more employee under second manager then problem start.
i want to display first manager detail and in the next ro...