in reply to Re: Reading concurrently two files with different number of lines
in thread Reading concurrently two files with different number of lines

Why a hash? If there are no "gaps", you can use an array.
لսႽ† ᥲᥒ⚪⟊Ⴙᘓᖇ Ꮅᘓᖇ⎱ Ⴙᥲ𝇋ƙᘓᖇ
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