Boolean (logical) operations on vectors
examples/vectors/boolean_vectors_truth_table.R
a = c(TRUE, TRUE, FALSE, FALSE) b = c(TRUE, FALSE, TRUE, FALSE) sum(a) sum(b) # number of TRUE items a & b a | b ! a
examples/vectors/boolean.R
a = c(TRUE, TRUE, FALSE, TRUE) b = c(TRUE, FALSE, TRUE, FALSE) c = c(TRUE, FALSE, FALSE, TRUE) a & b a | b ! a # operator precedence # the use of parentheses a & (b | c)