itsthestranger opened a new pull request #1514:
URL: https://github.com/apache/systemds/pull/1514


   These commits add the builtin for date processing, which identifies the date 
column by looking at the data (via regular expressions) and enables 
transformations of this date column according to the input parameters. The 
function name for the builtin is "dateProcessing" and its signature allows 4 
parameters:
   
   - convertToNumber -> allows the conversion of the date column to numbers 
(i.e. timestamps (in milliseconds))
   - convertToDominant -> allows the conversion of all dates in the date column 
to the dominating pattern in the date column
   - valToAdd -> the value to be added/subtracted from the dates in the date 
column (returns dates in date-time format)
   - timeformatToAdd -> the specific time-format of the value to be 
added/subtracted (i.e. if there should be seconds/hours/days/etc. 
added/subtracted)


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