Summary: Comma-separated values (CSV) is a well-known text format for representing tabular data. In this chapter we will build a library to read CSV data and convert it into an internal represenation.
The chapter includes a tcl script that downloads data from quote.yahoo.com, but the link is outdated,
and instead of looking for a new one, I would just hardcode some data in a file.
Sample data csv file: data.csv