interpreter

In section 4, Tables, in The Implementation of Lua 5.0 there is and example: local t = {100, 200, 300, x = 9.3} So we have t[4] == nil . If I write t[0] = 0 , this will go to hash part . If I write t[5] = 500 where it will go? Array part or hash part ? I would eager to hear answer for Lua 5.1, Lua 5.2 and LuaJIT 2 implementation if there is difference. Contiguous integer keys starting from 1 always go in the array part. Keys that are not positive integers always go in the hash part. Other than that, it is unspecified, so you cannot predict where t[5] will be stored according to the spec (and

In GTK2, I enjoyed building a gui in the interpreter (ipython or plain python) "on the fly" and seeing the changes in real time like this: >>> import gtk >>> win = gtk.Window() >>> win.connect('delete-event', gtk.main_quit) 10L >>> win.show_all() Which will result in showing a window to which I could add objects. I'm changing to Gtk3 in part because it is the future and in part because I sometimes use Glade which now is only Gtk3. In doing the same with GTK3 DOESN'T show the window: >>> from gi.repository import Gtk >>> win = Gtk.Window() >>> win.connect('delete-event', Gtk.main_quit) 13L >>>

I'm looking for a formula interpreter that I can use in a C# application. It needs to be able to interpret a string like this: max(1+2, 4) * x I found Writing a fast formula interpreter (codeproject.com) which almost does what I need but it doesn't allow for functions with multiple parameters. I could probably add that functionality to it but I was just wondering if something like this already exists. Thanks A couple I've used in the past with no problems: NCalc Fast Lightweight Expression Evaluator You can actually build a very effective interpreter by parsing and replacing certain functional

Hm, this is language - agnostic, I would prefer doing it in C# or F#, but I'm more interested this time in the question "how would that work anyway". What I want to accomplish ist: a) I want to LEARN it - it's about my ego this time, it's for a fun project where I want to show myself that I'm a really good at this stuff b) I know a tiny little bit about EBNF (although I don't know yet, how operator precedence works in EBNF - Irony.NET does it right, I checked the examples, but this is a bit ominous to me) c) My parser should be able to take this: 5 * (3 + (2 - 9 * (5 / 7)) + 9) for example and

As the title indicates, are there any C/C++ bytecode compilers/interpreters? I'm writing an application in an interpreted language that depends on certain libraries that are fully cross-compilable (there are no special flags to indicate code changes during compilation for a certain platform) but are written in C and C++. Rather than shipping n-platform-specific-libs with each platform, it would be nice to ship one set of libs which are interpreted by one platform specific interpreter. Possible and/or available? EDIT1: The interpreted language in question is Python, though I may also use Ruby.

I am trying to make a small interpreting program with JavaScript/jQuery. So what I want is that when the user enter some text in the textarea the program should interpret that text and print the output in another text area. Till now I have achieved this: https://jsfiddle.net/7462hbv1/ With this I am able to catch each of the string that the user inputs in the text area. But now I want that when the user for example enter: number a =1 number b=2 number sum=0 sum =a +b print sum the program should interpret this and the output should be 3 in this case. Can anyone give me any idea how can I do