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hsbt/scoped_env.rb

Created December 12, 2011 01:29
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scoped_env.rb
def scoped_env(env)
old = {}
ENV.each {|k,v| old[k] = v}
env.each {|k,v| ENV[k] = v}
yield
old.each {|k,v| ENV[k] = v}
end
ENV['foo'] = 'buzz'
p ENV['foo']
scoped_env 'foo' =>'bar' do
p ENV['foo']
end
p ENV['foo']
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