| %ni% | not in | 
| .efface_test | delete .test file in testthat folder | 
| all_ggplot_to_pptx | Save all ggplot in a pptx | 
| as_mon_numeric | Transform a vector into numeric if meaningful, even with bad decimal, space or % | 
| clean_levels | Clean levels label | 
| clean_names | clean_names | 
| clean_vec | Clean character vector | 
| dput_levels | return R instruction to create levels | 
| excel_col | Get position or excel name of column | 
| excel_names | Get position or excel name of column | 
| excel_to_ncol | Get position or excel name of column | 
| find_name | find pattern in name's dataset | 
| from_excel_to_posixt | transform the excel numeric date format into POSIXct | 
| gsub2 | like gsub but keep a factor as factor | 
| is.01 | does this vector only contains 0 and 1 | 
| is.12 | does this vector only contains 1 and 2 | 
| is_full_figures | Predicate for charater vector full of figures | 
| is_full_na | Predicate for full NA vector | 
| is_likert | is a factor a likert scale | 
| look_like_a_number | return TRUE if this look like a number | 
| make_unique | make.unique improvement | 
| ncol_to_excel | Get position or excel name of column | 
| peep | peep the pipeline | 
| replace_pattern | Replace pattern everywhere in a data.frame | 
| save_as_csv | export a data.frame to csv | 
| set_col_type | set a given coltype to each column in a data.frame |