baptiste auguie wrote:
2009/8/31 David Scott <d.sc...@auckland.ac.nz>
I think this discussion is valuable, and have previously asked about style
which I think is very important. Base R does suffer from very inconsistent
naming and as I think Duncan said it makes it very difficult sometimes to
remember names when you have variations in case and separators as with
things related to system.
David
Is it a foolish idea to think that perhaps code could be checked and
re-formatted automatically when building a package?
Building a package is the wrong time: this is something that should be
done by the author, to the source, before building, but it's quite
hard. What you're talking about is a "pretty printer" or "code
beautifier". One tricky bit is handling comments, another is handling
idiosyncratic formatting. For example, I often line up things on
successive lines just so that it's easy to see differences I consider
important, e.g. in tables of constants, etc.
Duncan Murdoch
Say, I write a function like this,
this.is.my.name = function(
a = 1,b=2,
# i'm a comment
z=F)
{
if(T)
{
print("true")
} else
{
print("else")
}
}
package.skeleton automatically converts the first "=" sign to "<-" and
sometimes also adds backquotes `` to protect the function name. Could this
be extended in a few ways,
1- rationalise the function naming scheme, e.g convert every function name
to camelCase (and provide aliases not to break dependencies)
2- indent the code and add spaces around commas
3- tidy up the position of braces to make it consistent
4- convert T and F to TRUE and FALSE, this sort of things
5- finally, run a comparison of the two versions to check that the behaviour
is as intended.
1,2,3 could be tuned according to a template that the user chooses for a
given package (some may prefer underscores, etc.)
Perhaps I'm dreaming a bit here, this sounds like meta-programming.
Best,
baptiste
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