nested_split
splits by comma, keeps parenthesis sections together
See also
Other Data Cleaning Functions:
Check_Dupe_Columns()
,
Check_Trunc()
,
Check_Verbose()
,
Date_Shift()
,
Def_Control()
,
Def_model_control()
,
Event_Count_Gen()
,
Event_Time_Gen()
,
Joint_Multiple_Events()
,
Replace_Missing()
,
Time_Since()
,
factorize()
,
gen_time_dep()
,
interact_them()
,
parse_literal_string()