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Recycling in arithmetic operations involving zero-length vectors

Roland Fuß 
Dear R-core,

The language definition is very clear:

"As from R 1.4.0, any arithmetic operation involving a zero-length 
vector has a zero-length result."

Thus, `1 + numeric()` returns `numeric(0)`. However, I don't find this 
very intuitive because usually the shorter vector is recycled to the 
length of the longer vector. Would it be possible to throw at least a 
warning for such cases? I don't expect them to be intended by most users.

Best regards,

Thread (7 messages)

Roland Fuß Recycling in arithmetic operations involving zero-length vectors Jan 16 Duncan Murdoch Recycling in arithmetic operations involving zero-length vectors Jan 16 David Winsemius Recycling in arithmetic operations involving zero-length vectors Jan 16 Duncan Murdoch Recycling in arithmetic operations involving zero-length vectors Jan 16 Deepayan Sarkar Recycling in arithmetic operations involving zero-length vectors Jan 16 GILLIBERT, Andre Recycling in arithmetic operations involving zero-length vectors Jan 16 Peter Dalgaard Recycling in arithmetic operations involving zero-length vectors Jan 17