| get_colno_pattern_colname | R Documentation | 
Function to return the column number if a given pattern is contained in the column names of a data
get_colno_pattern_colname(pattern, column_names)
| pattern | a string that needs to be checked | 
| column_names | column names actually have | 
column number, if success error, if failure
get_colno_pattern_colname("age", "female_age")
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