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What exactly is a reentrant function?
...r hands, means that the author of the function calling the callback has no info whatsoever about what's the callback doing, so this author can find it difficult to make sure his/her function is reentrant. This is this difficulty I wanted to show.
– paercebal
De...
Why does Python code run faster in a function?
... @thedoctar have a look at the globals() function. If you want more info than that you may have to start looking at the source code for Python. And CPython is just the name for the usual implementation of Python -- so you probably are using it already!
– Katriel
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What is Node.js? [closed]
...figure out how screwed it really is).
Node.js is SINGLE THREADED and LOCK FREE. Node.js, as a very deliberate design choice only has a single thread per process. Because of this, it's fundamentally impossible for multiple threads to access data simultaneously. Thus, no locks are needed. Threads are...
Java naming convention for static final variables [duplicate]
...
That's still a constant. See the JLS for more information regarding the naming convention for constants. But in reality, it's all a matter of preference.
The names of constants in interface types should be, and final
variables of class types may conventionally be...
Difference between Mock / Stub / Spy in Spock test framework
... maybe even slightly falsify in the upcoming paragraphs. For more detailed info see Martin Fowler's website.
A mock is a dummy class replacing a real one, returning something like null or 0 for each method call. You use a mock if you need a dummy instance of a complex class which would otherwise us...
How to color System.out.println output? [duplicate]
...html
Edit: of course there are newer articles than that one I posted, the information is still viable though.
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std::function vs template
...d statically (i.e. at compile time), so the compiler has all the necessary information to optimize and possibly inline the code (which would not be possible if the call were performed through a vtable).
Yes, it is true that template support is not perfect, and C++11 is still lacking a support for c...
What is the purpose of setting a key in data.table?
...le, ZIP, of all the zip codes in the US (>33,000) along with associated information (city, state, population, median income, etc.). If I want to look up the information for a specific zip code, the search (filter) is about 1000 times faster if I setkey(ZIP,zipcode) first.
Another benefit has to ...
What's the difference between “groups” and “captures” in .NET regular expressions?
...y of cases I think he missed the boat. In the short term (?:.*?(collection info)){4,20} increases efficiency by more that a few hundred percent.
– user557597
Feb 28 '17 at 0:51
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What is the most effective way for float and double comparison?
... fabs(a - b) < EPSILON;
}
Edit: Christer has added a stack of great info on this topic on a recent blog post. Enjoy.
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