Type coercion

• c(1, 1L, "C")

c(1, 1L, "C")

[1] "1" "1" "C"

1

[1] 1

1L

[1] 1

"C"

[1] "C"

#typeof(c(1, 1L, "C"))

• c(1L / 0, "A")

c(1L / 0, "A")

[1] "Inf" "A"  

typeof(1L)

[1] "integer"

typeof(0)

[1] "double"

typeof(1L/0)

[1] "double"

typeof("A")

[1] "character"

#typeof(c(1L / 0, "A"))

• c(1:3, 5)

c(1:3, 5)

[1] 1 2 3 5

typeof(1:3)

[1] "integer"

typeof(5)

[1] "double"

#typeof(c(1:3, 5))

• c(3, "3+")

c(3, "3+")

[1] "3"  "3+"

typeof(3)

[1] "double"

typeof("3+")

[1] "character"

#typeof(c(3, "3+"))

• c(NA, TRUE)

c(NA, TRUE)

[1]   NA TRUE

typeof(NA)

[1] "logical"

typeof(TRUE)

[1] "logical"

#typeof(c(NA, TRUE))