find if string contains mutliple words in r -

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i have following data frame:

dat <- data.frame(name = c("john", "company pty ltd", ""), surname = c("smith", "", "company b"), company = c("company d", "a ltd", "company b"))

i want check if company column contains word either in firstname or surname.

i have used following code:

dat$cliniconly <- mapply(grepl, pattern=dat$firstname, dat$company)

but checks whole string present. hence works first row, misses second row, , gets last row correct because detected blank firstname entry.

how write function produces false, true, true ?

how this, using intersect hard work?:

v1 <- strsplit(do.call(paste, dat[1:2]), "\\s+") v2 <- strsplit(as.character(dat$company), "\\s+")  mapply(function(x,y) length(intersect(x,y)) > 1, v1, v2) #[1] false  true  true

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