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determine arguments passed to a method at runtime

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Is that possible?

What I want to do is, using RMagick, create a ImageList with the gifs
containded in a folder, so the script would first record the names,
and then pass them to the constructor of the ImageList. It would be
something like this (if this worked):

#arguments passed to the constructor
args = []

dir ="gifs")
dir.each do |nombre|
#populate the arguments array

list =

Thank's in advance.

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