kev-inn opened a new pull request #1020:
URL: https://github.com/apache/systemds/pull/1020


   This PR adds a new function `columnNames()` which takes a `Frame` and 
returns a `Frame` containing the names of the columns.
   I did not yet add any documentation since I am not aware of the current 
process. Should documentation be added in the initial PR? Should a new PR be 
made just for documentation of this function? Is documentation added in bulk?
   I also detected that the functions `typeOf` and `detectSchema`, which belong 
to the same "category" (instruction type) as this function are defined in 
`src/main/java/org/apache/sysds/runtime/functionobjects/Builtin.java`, but I 
believe those definitions are not used. Am I overlooking something and this 
function should be added there?


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