Sum of values in vectors
y = c(2, 7, 3)
sum(y) # 12
sum(TRUE) # 1
sum(FALSE) # 0
the_truth = c(TRUE, FALSE, TRUE, TRUE, FALSE)
sum(the_truth) # 3
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y = c(2, 7, 3)
sum(y) # 12
sum(TRUE) # 1
sum(FALSE) # 0
the_truth = c(TRUE, FALSE, TRUE, TRUE, FALSE)
sum(the_truth) # 3