From: Daniel Schierbeck <daniel.schierbeck@...>
Date: 2006-07-12T03:45:12+09:00
Subject: Re: Some questions about serious Ruby development...

Daniel Schierbeck wrote:
> John wrote:
>> def describe code
>>   # takes a string to be eval'ed and prints it along 
>  >   # with showing the return value
>>   sep = ' => '
>>   begin
>>     result = eval(code)
>>     puts code + sep + result.inspect
>>     return result
>>   rescue Exception => e
>>     puts code + sep + e.to_s
>>     return nil
>>   end
>> end
> 
> Hi John,
> 
> You can write than method even more terse:
> 
>   def describe code
>     sep = ' => '
>     result = eval(code)
>     puts code + sep + result.inspect
>     return result
>   rescue Exception => e
>     puts code + sep + e.to_s
>     # puts already returns nil
>   end

or perhaps even

   def describe code
     out = eval(code).inspect
   rescue Exception => e
     out = e.to_s; nil
   ensure
     puts code + " => " + out
   end


Cheers,
Daniel