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Case Study: CSV Library (cont)

Definition of field seems simple from above example.

However, there are some subtle issues:

  • fields are separated by commas
  • fields may be enclosed in quotes ("...")   (not treated as part of value)
  • within quotes: "" is replaced by ", comma is not a separator
Example, the CSV line: 

123,"abc",,""",""","",I am,

has fields 

('123', 'abc', '', '","', '', 'I am', '')