From: John Joyce <dangerwillrobinsondanger@...>
Date: 2007-09-16T02:13:24+09:00
Subject: Re: one line to print the statement AS WELL AS the evaluated value like in C


On Sep 15, 2007, at 1:51 AM, kendear wrote:

> i wonder in Ruby, is there a line method to do something like in C
>
>
> print_val("Array[3] + 1")
>
> and get the printout of
>
>
> Array[3] + 1  is   3.345

All you need is something like:

puts "myArray[3] + 1 is #{myArray[3] + 1} "

String interpolation. Great stuff.
Of course you have to create that array first to have something in it.

You could also do:

puts "myArray[3] + 1 is " + (myArray[3] + 1).to_s

Lots of ways, but the first one is most succinct.
Ruby is very flexible!
You can even go from this into a DSL with words that evaluate to  
expressions.