package 'stringi' does not work after updating to R3.2.1
I had the same problem. Marek's comment above, that install.packages is looking for the source instead of the binary because it's newer, was correct for me too. But his suggestion to use the "options" line didn't work for me for some reason. This, however, did work:
install.packages("stringi",type="mac.binary")
This is much easier than trying to install a compiler through Xcode to process the source package.
stringi functions within dplyr
Use paste with collapse='|'
v %>% mutate(is_emoji = stri_detect_regex(lemma, pattern = paste(a, collapse = '|')))
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