r - Is it possible to use an AND operator in grepl()? -


i want search begins 55 , has word roof (case-sensitive, curious) in it.

so far have been unsuccessful, can seem use or operator:

grepl("*^55|*roof", dataset$longname)

ultimately, want achieve this:

grepl("*^55&&*roof", dataset$longname)

or

grepl("*^55&*roof", dataset$longname)

(clearly, neither of these work - they're illustration only.)

i want results show begins 55 , has word roof anywhere in it.

for example, expect both of these results picked grepl() function:

55 - roof structure

and

55-wall roof

is there and operator can used grepl()?

to search string having both "a" , "b"

grepl("a", x) & grepl("b", x)

or

grepl("a.*b|b.*a", x)

if know order of 2 parts can omit 1 of 2 halves of last grepl. example, in case of query in question sufficient find string starts 55 , contains roof

grepl("^55.*roof", x)

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