twitter/scalding — pull request #106 by echen (2012-06-22 05:14:33+00:00)
Title: Add a separate HeaderTsv source for TSV files with headers

The current Tsv source already takes in two optional "sh" (skipHeader) and "wh" (writeHeader) parameters, but per Oscar's suggestion, I added a new source to read/write TSV's with headers.

Note 1: I wasn't sure if we wanted to remove the header functionality from Tsv. Also, another (better? worse?) name for this is "TsvWithHeader".

Note 2: taking a boolean parameter is less distasteful now that I remember Scala has named arguments, so actually I don't care too much about this addition. (though I would prefer a _single_ "header" argument instead)