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How to check if a file exists?
Hi I have little experience in Mathematica and I have trouble getting used to the Mathematica way of thinking. I'm looking for a way to check if a given file exists. If it exists, I load its contents, if not I have to start a block of calculations. I just can't find the function to check the existence of a file! Thanks Tom -- Thomas Guignard Laboratory of Electromagnetics and Acoustics Swiss Federal Institute of Technology, Lausanne