You're reading in CSV data, and some of it may contain comma's and other pesky characters. I am presuming that for example, strings like location_4 would be something like "London, England" in the real data.

So use CPAN libraries such as Text::CSV to read your CSV data instead of simply reading it line by line and using split

In reply to Reading your input by space_monk
in thread Building a data structure - %HoH, %HoA? by Roboz

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