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Calling C++ class methods via a function pointer
...ues are a reason for non-portability with member pointers - Visual C++, at least in the past, needed some extra clues about how to represent member pointer types. I'd use the static function approach for an embedded system - the representation of a pointer is the same as any other function pointer, ...
Unauthorised webapi call returning login page rather than 401
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i think im using System.web.http.authorizeattribute, at least this webapicontroller doesnt have a using for system.web.mvc, and going to definition of the authorize attribute sends me to system.web.http
– Tim
Nov 22 '13 at 18:50
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Why is it slower to iterate over a small string than a small list?
...oops, best of 3: 0.0374 usec per loop
The difference seems small, but at least half of the cost is overhead:
>>> python3 -m timeit -s 'import random; iterable = [chr(random.randint(0, 127)) for _ in range(100000)]' 'iterable; 123'
100000000 loops, best of 3: 0.0173 usec per loop
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return, return None, and no return at all?
...instructions are basically how the different methods should be used (or at least how I was taught they should be used), but they are not absolute rules so you can mix them up if you feel necessary to.
Using return None
This tells that the function is indeed meant to return a value for later use, a...
What's the algorithm to calculate aspect ratio?
... I'd add them at the top/bottom or the sides (whichever one results in the least number of letter-boxing lines) until the image meets the requirements.
One thing you may want to consider is the quality of a picture that's been changed from 16:9 to 5:4 - I still remember the incredibly tall, thin co...
Sorting a vector of custom objects
...nstead of inlining the ordering logic which might be a severe drawback (at least when link time optimization/code generation is not applied).
Ways to achieve comparability of class X in order to use standard library sorting algorithms
Let std::vector<X> vec_X; and std::vector<Y> vec_Y;...
How to sort in-place using the merge sort algorithm?
...erge sort, which as you commented is stable. It works best if there are at least 2 · sqrt(n) unique values, which allows them to be re-ordered to provide working areas of an array and remain stable.
– rcgldr
Apr 27 '19 at 11:21
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What is the fastest/most efficient way to find the highest set bit (msb) in an integer in C?
...d I want to know the position of the most significant bit (that is, if the least significant bit is on the right, I want to know the position of the furthest left bit that is a 1), what is the quickest/most efficient method of finding out?
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What is Java Servlet?
...es what is a container supposed to do? And the answer is; In Java world at least It is guided (note I did not use the word controlled) by specifications. For example Servlet specifications (See resource 2) dictates what a servlet must be able to do. So if you can write an implementation for the spec...
Can I protect against SQL injection by escaping single-quote and surrounding user input with single-
... (albeit not when passing the query to SQL Server using ADO or ADO.NET, at least -- can't vouch for all databases or technologies).
The snag is that you really have to be certain which strings contain user input (always potentially malicious), and which strings are valid SQL queries. One of the tr...