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C++ templates Turing-complete?
... even has MPL aka (Meta Programming Library). But try debugging a compiler error in your template code and you will be in for a long hard ride.
But a good practical example of it being used for something useful:
Scott Meyers has been working extensions to the C++ language (I use the term loosely...
What's the difference between size_t and int in C++?
...o assume size_t is the same as unsigned int, which can lead to programming errors, particularly as 64-bit architectures become more prevalent.
Also, check Why size_t matters
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Why does Date.parse give incorrect results?
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@Daniel—fortunately the ECMAScript authors fixed their error with respect to missing time zone for date and time representations. Now date and time strings without a timezone use the host timezone offset (i.e. "local"). Confusingly, ISO 8601 date only forms are treated as UTC (ev...
Effect of NOLOCK hint in SELECT statements
... to get things like a Row Count or other summary data where some margin of error is acceptable, then NOLOCK is a good way to boost performance for these queries and avoid having them negatively impact database performance.
Always use the NOLOCK hint with great caution and treat any data it returns ...
What is JSONP, and why was it created?
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JSONP is a great away to get around cross-domain scripting errors. You can consume a JSONP service purely with JS without having to implement a AJAX proxy on the server side.
You can use the b1t.co service to see how it works. This is a free JSONP service that alllows you to minify...
Difference between len() and .__len__()?
...t recent call last):
File "<stdin>", line 1, in <module>
TypeError: 'str' object cannot be interpreted as an integer
When you see a call to the len built-in, you're sure that, if the program continues after that rather than raising an exception, the call has returned an integer, non-...
Python - write() versus writelines() and concatenated strings
...ou provide a list of strings, it will raise an exception (by the way, show errors to us!).
writelines(arg) expects an iterable as argument (an iterable object can be a tuple, a list, a string, or an iterator in the most general sense). Each item contained in the iterator is expected to be a string....
What are the security risks of setting Access-Control-Allow-Origin?
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There is a fail safe implemented in browsers that will result in below error
"Credential is not supported if the CORS header ‘Access-Control-Allow-Origin’ is ‘*’"
So in most scenarios setting ‘Access-Control-Allow-Origin’ to * will not be a problem. However to secure against attacks...
What's the difference between IEquatable and just overriding Object.Equals()?
...bj is not of type EntityBase, it will pass "null" and continue without any error or exception, But in case of "(EntityBase)obj", it will forcefully try to cast the obj to EntityBase and if the obj is not of type EntityBase, it will throw InvalidCastException. And yes, "as" can only be applied to ref...
Spinlock versus Semaphore
...so (at least on Linux) the spin_trylock, which returns immediately with an error code, if the lock could not be acquired. A spin‑lock is not always that harsh. But using spin_trylock requires, for an application, to be properly designed that way (probably a queue of pending operations, and here, s...