User-friendly wrappers for named capture regular expressions.
Informative errors when type.list is unusual.
Coveralls badge, 100% test coverage via jimhester/covr.
str_match_named was sometimes incorrectly issuing a warning when given NA subjects, but this is now fixed.
When type.list is supplied, data.frame(stringsAsFactors=FALSE) is now used to create the data.frame from the character match groups matrix. This allows simple numerical conversions using functions like as.numeric and as.integer (before, we got unexpected results since those functions take the factor ID number).
Test optional groups, set NA before calling substring to avoid "NAs introduced by coercion" warning.
stop with informative errors for pathological subjects and patterns.
first version forked from str_match*perl in my .Rprofile. There are several differences: