Re: [R] R annoyances

From: Thomas Lumley <tlumley_at_u.washington.edu>
Date: Fri 20 May 2005 - 02:39:13 EST

On Thu, 19 May 2005, Rod Montgomery wrote:
> Thomas Lumley wrote:
>> This one is actually a FAQ,
>> mtx[,1,drop=FALSE]
>>
>> -thomas
>>
> I wonder whether there is, or should be, a way to set FALSE as the default?
>

There shouldn't be (apart from editing the code), because you really don't want something this basic to be unpredictable.

There have been discussions at several times about whether drop=FALSE or drop=TRUE should be the default. The decision has always been that programmers can cope either way, but that users probably don't expect mtx[,1] to be a vector, and that they definitely don't expect mtx[1,1] to be a matrix.

         -thomas



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