turning off case sensitivity in r

Question

I am having difficulty with case sensitivity. Can we turn it off?

A1 <- c(\"a\", \"A\", \"a\", \"a\", \"A\", \"A\", \"a\")
B1 <- c(rep(\"a\", length(A1)))
         


        

Answer 1

There's no way to turn off case sensitivity of ==, but coercing both character vectors to uppercase and then testing for equality amounts to the same thing:

toupper(A1)
[1] "A" "A" "A" "A" "A" "A" "A"

toupper(A1)==toupper(B1)
# [1] TRUE TRUE TRUE TRUE TRUE TRUE TRUE