Taking a variable number of arguments is not a problem for normal Julia functions [1]. @printf is a macro so that it can parse and interpret the format string at compile time and generate custom code for that specific format string. People may not realize that C’s printf function re-parses and re-interprets the format string … Read more
The Julia Modules documentation states: The import keyword […] only operates on a single name at a time. It does not add modules to be searched the way using does. import also differs from using in that functions must be imported using import to be extended with new methods. […] Functions whose names are only … Read more
The key word in this question is “algorithm”: What is the fastest performance you can eke out of the two algorithms below (preferably with an explanation of what you changed to make it more R-like)? As in “how fast can you make these algorithms in R?” The algorithms in question here are the standard Mandelbrot … Read more
You can use the @doc macro in Julia versions 0.4 (Oct. 2015) and above. % julia _ _ _ _(_)_ | A fresh approach to technical computing (_) | (_) (_) | Documentation: http://docs.julialang.org _ _ _| |_ __ _ | Type “?help” for help. | | | | | | |/ _` | | … Read more
Tim Holy’s answer is quite correct, but I’ll elaborate a bit. First, let’s define some terms – you may disagree with my definitions, but at least you’ll know what I’m saying. The primary difference between static and dynamic languages, in my view, is this: in static languages, expressions have types; in dynamic languages, values have types. … Read more
I too have been looking at Julia ever since Doug Bates sent me a heads-up in January. But like @gsk3, I measure this on an “Rcpp scale” as I would like to pass rich R objects to Julia. And that does not seem to be supported at all right now. Julia has a nice and … Read more
Symbols in Julia are the same as in Lisp, Scheme or Ruby. However, the answers to those related questions are not really satisfactory, in my opinion. If you read those answers, it seems that the reason a symbol is different than a string is that strings are mutable while symbols are immutable, and symbols are … Read more