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What is the difference between sigaction and signal?
... signal() . To follow convention I should use sigaction() but if I was writing from scratch, which should I choose?
9 Ans...
C# Float expression: strange behavior when casting the result float to int
... you know that 6.2f * 10 is not exactly 62 due to floating point rounding (it's actually the value 61.99999809265137 when expressed as a double) and that your question is only about why two seemingly identical computations result in the wrong value.
The answer is that in the case of (int)(6.2f * 10...
How is this fibonacci-function memoized?
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The evaluation mechanism in Haskell is by-need: when a value is needed, it is calculated, and kept ready in case it is asked for again. If we define some list, xs=[0..] and later ask for its 100th element, xs!!99, the 100th slot in the list gets "fleshed out", holding the number 99 now, ready for...
Does the 'mutable' keyword have any purpose other than allowing the variable to be modified by a con
...hile ago I came across some code that marked a member variable of a class with the mutable keyword. As far as I can see it simply allows you to modify a variable in a const method:
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Understanding the meaning of the term and the concept - RAII (Resource Acquisition is Initialization
... you C++ developers please give us a good description of what RAII is, why it is important, and whether or not it might have any relevance to other languages?
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Is there any NoSQL data store that is ACID compliant?
... in a "document" model, e.g. MongoDB) as a direct alternative to the explicit schema in classical RDBMSs. It allows the developer to treat things asymmetrically, whereas traditional engines have enforced rigid same-ness across the data model. The reason this is so interesting is because it provides ...
Can an Android NFC phone act as an NFC tag?
... reader which will read data from an NFC tag. Now my question is, can we switch this around? Can we make an Android NFC phone behave as the tag which an NFC reader will get data from?
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Is it possible to use “/” in a filename?
...here a way to use the slash character that normally separates directories within a filename in Linux?
6 Answers
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What are 'closures' in .NET?
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I have an article on this very topic. (It has lots of examples.)
In essence, a closure is a block of code which can be executed at a later time, but which maintains the environment in which it was first created - i.e. it can still use the local variables etc of t...
C++ : why bool is 8 bits long?
In C++, I'm wondering why the bool type is 8 bits long (on my system), where only one bit is enough to hold the boolean value ?
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