Add index()
, col()
, and vlookup()
to ExprTk
#2374
Merged
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This adds
index()
which returns the primary key of the current row,col('column_name')
which is essentially the same as"column_name"
except that it takes a string literal, andvlookup('column_name', index)
which will lookup a value in a column by primary key such thatcol('a') == vlookup('a', index())
.