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nathanmarz / cascalog

Data processing on Hadoop without the hassle.
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allow capture of filter results #276

Closed sritchie closed 9 years ago

sritchie commented 9 years ago

Fixes https://github.com/nathanmarz/cascalog/issues/275.

This fix allows queries to capture the results of filter operations and guard them with boolean literals or function guards (false? and true?).

I also modified mapop so it can be used as a filter operation if you don't supply any output variables.