From: Jason Dew <Jason.Dew@...>
Date: 2008-03-03T10:42:06+09:00
Subject: Re: Hello, world? (#158)

Here's all I came up with:

class Hello; def self.world!; [self, __callee__].join(' '); end; end

puts Hello.world!

Only works with Ruby 1.9 though...

On Feb 29, 7:06 pm, Matthew D Moss <matthew.m...@gmail.com> wrote:
> The three rules of Ruby Quiz 2:
> 1.  Please do not post any solutions or spoiler discussion for this  
> quiz until 48 hours have passed from the time on this message.
>
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>
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>
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>
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>
> -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
>
> Hello, world?
>
> The first program any new programmer typically sees is one that  
> prints out "Hello, world!" to the console. This tends to be something  
> experienced programmers also see when learning a new language. The  
> first Hello World program was written in B [1] by Kernighan and  
> looked like this:
>
>          main( ) {
>              extrn a, b, c;
>              putchar(a); putchar(b); putchar(c); putchar('!*n');
>          }
>
>          a 'hell';
>          b 'o, w';
>          c 'orld';
>
> Most programmers are probably more familiar with the typical C  
> implementation:
>
>          main() {
>              printf("Hello, world!\n");
>          }
>
> Ruby can present the same output very simply:
>
>          puts "Hello, world!"
>
> But that's too simple... I mean, really... *anyone* can print a  
> simple string to standard output. Can't we get more interesting?  
> Hmmm, how about:
>
>          puts sprintf("%s, %s!", "Hello", "world")
>
> Eh, that looks too much like C. Maybe...
>
>          puts %w(Hello world).join(", ") + "!"
>
> Yeah, that's definitely looking Ruby-ish.
>
> Your task this week is to print "Hello, world!" to standard output  
> using Ruby in atypical fashion. Some guildlines:
>
> - DO submit multiple variants in your submission, but we don't need  
> 100 variants from everyone. Try to limit yourself to your best dozen.
> - DO keep things reasonably simple. I would expect many solutions to  
> be one- or two-liners, some solutions to involve classes and  
> functions, and a variety in-between. But we're looking for Ruby-isms,  
> not volume of code, so don't write pages upon pages of code just to  
> print "Hello, world!"
> - DON'T obfuscate unnecessarily. We're looking for interesting Ruby  
> tricks, not utter confusion. A little obfuscation is okay, but a lot  
> is to be avoided.
> - DON'T send me my own examples from above. I already did them. Do  
> other stuff. It *is* okay if your solution is similar to mine,  
> provided you make some interesting modifications.
>
> [1]http://cm.bell-labs.com/cm/cs/who/dmr/btut.html