Note in main how an instances of the classes can be created, and methods called, using ordinary Java interop. IBar, with a single method bar. In this case we are creating classes we intend to create instances of. There are full compilers substantially smaller than that for other languages Locals clearing By default, the Clojure compiler produces code that eagerly clears GC references to local bindings.
Note that eliding meta may make certain features inoperable for example, doc cannot return docstrings if they have been elided.
The only thing you need to know about LISP for now is that for every function call, put the open parenthesis in front of the function name and stack all closing ones on the same line: I find compiling Ruby as incredibly fascinating from a theoretical point of view because of the complexity involved, but unfortunately working on it takes a lot more time and effort than thinking about the problems.
See below for more info on each of these options. This is what I was talking about: The gen-interface call will create an interface called clojure. I have previously used Clojure in other projects to write back-end servers and loved the experience. It is not recommended to disable locals clearing for production compilation.
Sounds like an interesting project. Frankly, I would much rather have large performance improvements now than in years. The usage of high level functions is one of the key concepts of functional programming and they act like reusable building blocks for your program much like Tetris pieces.
Clojure is a compiled, functional and dynamically typed language that targets multiple existing runtimes. Typically this results in smaller class sizes and faster startup times.
If the var is not bound or nil, it will call the superclass method, or if an interface method, generate an UnsupportedOperationException. Iterator, a particularly nasty interface, in that it requires the implementation to be stateful.
I did start playing with MRI years ago, specifically the parser, actually, and started chopping out redundant pieces, but got frustrated and bored with it. This enables you to write functions that explicitly declare the behavioral expectations of its arguments instead some complex opaque type.
As of Clojure 1. This option takes a vector of meta keywords that should be removed - some common ones include: The stand-alone gen-class call will generate another named class, clojure.
Direct linking Normally, invoking a function will cause a var to be dereferenced to find the function instance implementing it, then invoking that function. Clojure is also a dialect of LISP, this is a design decision based on some interesting properties of LISP to make the language more extensible explained later.
However, when using a debugger locals will appear as nulls, which makes debugging difficult. The PyPy guys seem to have done pretty well at this. Doing the latter as a hobby is a daunting task.
This stub class defers all implementation to functions defined in the implementing namespace.Thus writing such interpreter is a good candidate for Kata session, TDD practice, etc. Using Clojure for the task is slightly more challenging due to inherent impedance mismatch between imperative Brainfuck and functional Clojure.
By default, the Clojure compiler produces code that eagerly clears GC references to local bindings. However, when using a debugger locals will appear as nulls, which makes debugging difficult.
Setting disable-locals-clearing=true will prevent locals clearing. It is not recommended to disable locals clearing for production compilation. ;; A couple of chaps have asked me to write a clojure macro tutorial, to explain ;; my debugging macro: (defmacro dbg [x] `(let [x# ~x] (println '~x "=" x#) x#)) ;; Which I use to.
With cljx installed as a plugin, all nREPL evaluations and load-file operations will be processed by cljx appropriately before they reach the Clojure or ClojureScript compiler.
Whether cljx code is processed. GWT is not particularly useful with Clojure, because it (GWT) uses a custom compiler that reads Java source code (not bytecode). Unless you want to write all your user-interface code in. I started it out without even having decided to compiler Ruby, mostly to write about various parts of the process of writing a compiler that I find interesting.
I find compiling Ruby as incredibly fascinating from a theoretical point of view because of the complexity involved, but unfortunately working on it takes a lot more time and effort.Download