k = 'qb'
v = 'incubator'
print "outer: #{k} => #{v}\n"
h = {
    m:'Kriemhild Gretchen',
    s:'Oktavia von Seckendorff',
}
h.each{ |k, v|
    print "  each: #{k} => #{v}\n"
}
print "outer: #{k} => #{v}\n"