powered by
is_A1(x) is_R1C1(x)
is_A1
is_R1C1
is_A1("A1") is_R1C1("A1") is_R1C1("R4C12") x <- c("A1", "$A4", "$b$12", "RC1", "R[-4]C9", "R5C3") data.frame(x, is_A1(x), is_R1C1(x))
Run the code above in your browser using DataLab