LCD

These are polyglot implementations of the July 2013 and March 2017 Coder Night problem. A "rosetta stone" of sorts, nearly identical implementations in each target language.

I try to be as idiomatic in each language as possible while staying true to the implementation (to help in making side-by-side comparisions). I'm far from an expert in a lot of these languages, so any feedback on specific techniques is appreciated.

• ruby √
• haxe √
• rust √
• lua √
• javascript (ES5) √
• javascript (ES2015) √
• c# √
• dart √
• c √
• c++ √

FAQ

These are some of the questions I found myself asking repeatedly when in unfamilliar territory:

• How are the project files ogranized, are there best-practices to follow?
• How do I run builds? A GUI, a Makefile (e.g. c, rust), run a VM on the command line (e.g. lua, ruby)?
• How do I print to standard out? "Hello, World?"
• What's the entry point? Is there a main function I can implement?
• How do I read the command line arguments (i.e. vargs)?
• How do I parse a string into a numeric/integer type?
• How do I define a new class, and what does the constructor look like? instance/member variables? Can I declare class-level static variables (e.g. for H_SYM and V_SYM)?
• What kind of control structures and iterators do I have, and how do I iterate each character in a string?
• Can I use a ternary conditional (a ? b : c) or a less-clear but semantic equivilant (a and b or c, e.g. in Lua)?
• How do I print to standard out without a new line character being appended for me?
• The bitwise 'and' operator; it's &, right?
• How do I raise a number to a power? (Math.pow, ^, **)?