Internal function with an opinionated default behavior to concatenate character values.
conc(x, y = ",", decr = FALSE, unique = TRUE)A single character vector to concatenate together.
By default a , string used to define the character
to collapse the x parameter.
Optional logical parameter that defines the sorting order,
by default set to FALSE, which results in an alphabetical order.
Optional logical parameter to concatenate only
unique values, by default set to TRUE
Returns a single character string.
Internal function