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What is the purpose of “return await” in C#?
Is there any scenario where writing method like this:
7 Answers
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What really is a deque in STL?
...nd the deque stopped me: I thought at first that it was a double linked list, which would allow insertion and deletion from both ends in constant time, but I am troubled by the promise made by the operator [] to be done in constant time. In a linked list, arbitrary access should be O(n), right?
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Why does .NET foreach loop throw NullRefException when collection is null?
So I frequently run into this situation... where Do.Something(...) returns a null collection, like so:
11 Answers
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What are forward declarations in C++?
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Why forward-declare is necessary in C++
The compiler wants to ensure you haven't made spelling mistakes or passed the wrong number of arguments to the function. So, it insists that it first sees a declaration of 'add' (or any other types, class...
Practical uses for AtomicInteger
...nteger and other Atomic variables allow concurrent accesses. In what cases is this class typically used though?
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Getting the first character of a string with $str[0]
... and I've noticed that $str[0] works great. I am just not sure whether this is 'good practice', as that notation is generally used with arrays. This feature doesn't seem to be very well documented so I'm turning to you guys to tell me if it's all right – in all respects – to use this notation?...
How to pass parameters correctly?
...sed, so that after the call returns, modifications to that object will be visible to the caller, then you should pass by lvalue reference:
void foo(my_class& obj)
{
// Modify obj here...
}
If your function does not need to modify the original object, and does not need to create a copy of ...
Different ways of adding to Dictionary
What is the difference in Dictionary.add(key, value) and Dictionary[key] = value ?
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Checking if a variable is an integer
Does Rails 3 or Ruby have a built-in way to check if a variable is an integer?
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In C#, how to check if a TCP port is available?
...r generally to connect to a socket how can I first check if a certain port is free on my machine?
19 Answers
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