Why doesn't comparison between numeric and character variables give a warning?

Question

I had a bug in my code resulting from an inadvertent comparison between a character variable and a numeric variable (they were both supposed to be numeric). This bug would h

Answer 1

In your example 5 is converted to a character, so the test is the same as 'two' < as.character(5).

From ?Comparison:

If the two arguments are atomic vectors of different types, one is coerced to the type of the other, the (decreasing) order of precedence being character, complex, numeric, integer, logical and raw.