twitter/scalding — pull request #247 by mcfunley (2012-12-13 06:51:36+00:00)
Title: Adding insert shortcut, for adding literal values to the tuple stream.

Pretty self-explanatory I think. A handful of times I've gone looking for this and resorted to the map equivalent. Naming from:

http://docs.cascading.org/cascading/1.2/javadoc/cascading/operation/Insert.html