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How to pass parameters correctly?
...mally by copying the object (**)
(*) pointers may refers to dynamically allocated memory, therefore when possible you should prefer references over pointers even if references are, in the end, usually implemented as pointers.
(**) "normally" means by copy constructor (if you pass an object of th...
Convert a series of parent-child relationships into a hierarchical tree?
...verhead on parsing recursive functions/calls. If there's no explicit stack allocation, I'd take iteration over recursion every day.
– user719662
Sep 17 '18 at 8:41
...
Please explain the exec() function and its family
... for the child and all the data would have been copied to child’s pages. Allocating new memory and copying data is a very expensive process(takes processor’s time and other system resources). We also know that in most cases, the child is going to call exec() and that would replace the child’s ...
Heap vs Binary Search Tree (BST)
...le its size takes O(n) worst case, while the tree heap just does new small allocations for each node.
Still, the backing array doubling is O(1) amortized, so it comes down to a maximum latency consideration. Mentioned here.
Philosophy
BSTs maintain a global property between a parent and all desc...
What's “P=NP?”, and why is it such a famous question? [closed]
...On the other hand, there's whole classes of planning problems and resource allocation problems that we could solve effectively.
You may have heard the description NP-complete. An NP-complete problem is one that is NP (of course), and has this interesting property: if it is in P, every NP problem ...
How efficient is locking an unlocked mutex? What is the cost of a mutex?
...you wish. You are only limited by the amount of memory you application can allocate.
Summary. User-space locks (and the mutexes in particular) are cheap and not subjected to any system limit. But too many of them spells nightmare for debugging. Simple table:
Less locks means more contentions (slo...
Algorithm for creating a school timetable
...ut that? Remember, this is people you're dealing with, not just a resource allocation problem.
Even if one teacher could work full-time for 16 weeks straight, that might be a sub-optimal solution compared to a solution where you try to alternate between teachers, and this kind of balancing is very ...
Simplest way to do a fire and forget method in c# 4.0
...tely from the original task). In the "lazy" case, you won't even incur an allocation for the continuation delegate.
Kicking off an asynchronous operation then becomes trivial:
Blindly.Run(SomeMethod); // Ignore error
Blindly.Run(SomeMethod, e => Log.Warn("Whoops", ...
Performance of static methods vs instance methods
... static classes are really stetless, cause if not it's easy mess up memory allocations and get memory leaks.
When the [this] keyword is used to call another method within the same
instance class, does the instance resolution still occur?
Not sure, about this point (this is a purely implement...
Fill remaining vertical space with CSS using display:flex
...n which case they would get equal space after the fixed container space is allocated.
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