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require 'stringio'
 
uyile=->{
  a = Hash.new
  ->n{
  if a[n.to_s].nil?
    a[n.to_s] = StringIO.new <<
    if n.is_a? Fixnum
      n.times
    else
      n.map
    end.to_a.join("\n")
    a[n.to_s].rewind
  end
  a[n.to_s].gets
}}.call
# print "test "+$_ while uyile.yield 3
print "test "+$_ while uyile.yield 4
print "test "+$_ while uyile.yield "a".."f"
print "test "+$_ while uyile.yield 4.times

Success #stdin #stdout 0.13s 8672KB

stdin

Standard input is empty

stdout

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https://ideone.com/z238wC

language:

Ruby (ruby 2.5.5)

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