| %+% | Concatenate two strings | 
| addCol | Add a constant column to a data.frame or matrix | 
| demean | Demean a vector or a matrix (by column) | 
| evalFunctionOnList | Evaluate Function Under Local Variables | 
| generateSignificance | Generate t-statistics, p-value and significance | 
| JBTest | p Value of Jarque Bera test | 
| label_both_parsed_recode | Combine label_both and label_parsed in 'ggplot2'. | 
| oapply | Outer apply | 
| packages | load packages with auto-installation | 
| recode | Recode the value of a vector | 
| repCol | Repeat a vector by col | 
| repRow | Repeat a vector by row | 
| shift | shift a vector by 'shift_by' unit | 
| sourceAll | Source all the R files of a directory | 
| splitBy | Split a vector by a sequence of length | 
| tic | Start Stop clock to measure performance | 
| toc | Start Stop clock to measure performance |