mapper: Make a mapper function
In conjugateprior/events: Store and Manipulate Event Data

Description Usage Arguments Details Value Author(s)

Creates mapper function

1	mapper(lst, re = FALSE, unmatched = NULL)

`lst`	A list of string to pattern associations
`re`	whether to treat the patterns as regular expressions
`unmatched`	what to return if there is no mapping (default NULL returns the original value)

This function creates and returns a function which renames arguments or returns them unchanged if no mapping is provided. The function is initialised using a list describing the reverse mapping. For example, given list(a=c(1,2), b=3) a function is returned that turns 1 and 2 in 'a', 3 into 'b' and leaves all other arguments unchanged. When re is TRUE, name values are treated as regular expressions. In the returned function the base R function grepl is used to find the first matching argument. It has its default parameters: no PERL-style regexps, case sensitivity, and character rather than byte-based matching. When re is FALSE only exact matches trigger the mapping.

A mapper function

Will Lowe

conjugateprior/events documentation built on May 13, 2019, 9:56 p.m.