On 29/08/2009 12:03 PM, Corrado wrote:
I do not understand why one should use a S3 preferentially on a S4 class, if
S4 is more rigorous.
As Spencer said, most people use either one or the other. I think it's
generally a bad idea to mix them (there are strange semantics if you do
that), so using just one is a good idea.
Which do you use? If you're a programmer working in a group, whatever
the rest of the group uses. It appears from the style guide that at
Google that's S3. That would be my choice too, but there are lots of
people who are very successful with S4.
Now I'm tempted to try to guess what character traits would make someone
prefer S4, but I think I'd only get into trouble ;-).
Duncan Murdoch
(The premiss is I am a newbie with OO programming in R, and would like to
understand what is the "proper" way to OO program in R ....)
Regards
On Saturday 29 August 2009 16:23:39 hadley wickham wrote:
An opening curly brace should never go on its own line;
I tend to do this:
f <- function()
{
if (TRUE)
{
cat("TRUE!!\n")
} else {
cat("FALSE!!\n")
}
}
(I don't usually put one-liners in if/else blocks; here I would have
used ifelse)
I haven't seen many others format code in this way. Is there an
objective reason for this (such as the rule for the trailing "}") or
is this just aesthetics?
It's probably just aesthetics. I don't like it because it increases
the number of lines without much real benefit - indenting already
gives you all the hints you need.
Hadley
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