I have mostly programmed in Python, but I am now learning the statistical programming language R. I have noticed some difference between the languages that tend to trip me.

Suppose v is a vector/array with the integers from 1 to 5 inclusive.

v[3]  # in R: gives me the 3rd element of the vector: 3
      # in Python: is zero-based, gives me the integer 4
v[-1] # in R: removes the element with that index
      # in Python: gives me the last element in the array

Are there any other pitfalls I have to watch out for?

python r
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