From: Kenichi Kamiya <kachick1@...>
Date: 2012-02-16T01:39:00+09:00
Subject: Re: how to turn strings into local vars to eval them in a proc?

You mean like this?

23^2 + 45*3 - 67/34 #=> 159

$VERBOSE = true

func = ->vars{
  eval [
    * vars.map{|var, val|"#{var} = #{val}"},
    "var1^2 + var2*3 - var3/34"
  ].join("\n")
}

func.call([["var1", 23], ["var2", 45], ["var3", 67]]) #=> 159

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