[R] FW: why is it numeric(0)?

From: luan_sheng <luan_sheng_at_yahoo.com.cn>
Date: Wed 01 Jun 2005 - 08:22:06 EST


hello,everyone. I have one question:

example 1
> x=numeric(0)
> y=5
> print(x+y)

numeric(0)  

example 2
> x=numeric(1)
> y=5
> print(x+y)

[1] 5

why the print(x+y) is numeric(0) at the first example, but the result is 0 at the second example?


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