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What is the purpose of the reader monad?
...so complex and seems to be useless. In an imperative language like Java or C++, there is no equivalent concept for the reader monad, if I am not mistaken.
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Proper use of the IDisposable interface
...ly override the Finalize() method.
You write a method that looks like a C++ destructor, and the
compiler takes that to be your implementation of the Finalize() method:
~MyObject()
{
//we're being finalized (i.e. destroyed), call Dispose in case the user forgot to
Dispose(); //<--W...
What does T&& (double ampersand) mean in C++11?
I've been looking into some of the new features of C++11 and one I've noticed is the double ampersand in declaring variables, like T&& var .
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Check if a class has a member function of a given signature
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wtf is this??? is it legal c++ code?? can you write "template<typename U, size_t (U::*)() const>"?? but... it's a great and new solution! I thank you, I'll analyze better tomorrow with my collegues... great!
– ugasoft
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Getting the closest string match
...his is an interesting approach! I am just playing a bit with your idea (in C++) but do not understand one point, the value of valuePhrase. If I see right in your code, its the return value of the Levenshtein distance function. How come it is a double/float value in the 'abcd efgh' search table? Leve...
Append an object to a list in R in amortized constant time, O(1)?
... list in amortized constant time, such as can be done, for example, with a C++ vector<> container. The best answer(s?) here so far only show the relative execution times for various solutions given a fixed-size problem, but do not address any of the various solutions' algorithmic efficiency di...
The case against checked exceptions
...in C than they do the traditional ‘exceptions’ we might recognise from C++ and other pre-Java languages. And that IMO this does indeed lead to confusion and poor design.
– bobince
Aug 22 '11 at 13:23
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How to run a program without an operating system?
...nks to which it is possible to combine high-level constructions (from C or C++) with low-level commands (from Assembler). This is a very useful method, but we have to remember that:
to build the program and obtain executable file you will need the compiler and linker of Assembler for 16-bit mode...
data.table vs dplyr: can one do something well the other can't or does poorly?
... to dplyr, we refer to dplyr's data.frame interface whose internals are in C++ using Rcpp.
The data.table syntax is consistent in its form - DT[i, j, by]. To keep i, j and by together is by design. By keeping related operations together, it allows to easily optimise operations for speed and more...
How do I pass a unique_ptr argument to a constructor or a function?
I'm new to move semantics in C++11 and I don't know very well how to handle unique_ptr parameters in constructors or functions. Consider this class referencing itself:
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