[Rd] as.Date.character suggestion
peter.langfelder at gmail.com
Wed Aug 20 22:11:53 CEST 2014
The default format="" in as.Date.character is supremely confusing. The
help shows as.Date defined as
## S3 method for class 'character'
as.Date(x, format = "", ...)
yet the function behaves very differently when format is not specified
and when it is specified to its default:
> as.Date("2012-01-01", format = "")
 "2014-08-20" ### Gives today.
The default setting is never used, because if format is not given,
values "%Y-%m-%d" and "%Y/%m/%d" are tried for it (rather than "").
My suggestion is to leave out the default "" for format in as.Date:
as.Date(x, format, ...)
If this causes a conflict in the S3 dispatching, at least indicate in
the help that the default is never used and the function works
differently if format is specified to its default.
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