From: Nick Brown <nick@...>
Date: 2010-02-28T06:21:30+09:00
Subject: scope question

Consider the following Sinatra app:

require 'sinatra'
vara = "foo"
VARB = "bar"
helpers do
  def geta
    vara
  end
  def getb
    VARB
  end
end
get '/a' do geta end
get '/b' do getb end

When I run that and browse to /b, it displays "bar". When I browse to
/a, however, it produces the error: "undefined local variable or method
`vara'".

Why do these two variables differ in scope?

How can I declare a variable that has global scope but is not a
constant?

Thanks in advance...
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