This is a demo package for my blog post on writing an R package from scratch to CRAN.
## load package
library(myfirstpkg)
## use re_match function
re_match(letters, "[a-d]")
#> [1] "a" "b" "c" "d" "" "" "" "" "" "" "" "" "" "" "" "" ""
#> [18] "" "" "" "" "" "" "" "" ""
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