This answer from a Category Theory perspective includes the following statement:...the truth is that there's no real distinction between co and contravariant functor, because every functor is just a covariant functor.
I'm reading 'C++ All-in-One for Dummies' by J. P. Mueller and J. Cogswell and stumbled onto this:This code starts out by initializing all the goodies involved — two integers and a pointer to an integer.
Package is a namespace. Module is a file with Perl code. cpan and cpanm are probably package managers. When I do cpanm XML::LibXML I install what exactly?
I'm currently learning Haskell, and have encountered the term "function application" a couple of times, without really understanding what is meant by it.