[R] The L Word

[jim holtman]

The notation '1L' mean to interprete the data as an 'integer'.

> str(1)
 num 1
> str(1L)
 int 1
>
> str(0xaa)
 num 170
> str(0xaaL)
 int 170



On Wed, Feb 23, 2011 at 11:08 AM, Gene Leynes <gleynes+r at gmail.com> wrote:
> I've been wondering what L means in the R computing context, and was
> wondering if someone could point me to a reference where I could read about
> it, or tell me what it's called so that I can search for it myself.  (L by
> itself is a little too general for a search term).
>
> I encounter it in strange places, most recently in the "save" documentation.
>
> save(..., list = character(0L),
>>      file = stop("'file' must be specified"),
>>      ascii = FALSE, version = NULL, envir = parent.frame(),
>>      compress = !ascii, compression_level,
>>      eval.promises = TRUE, precheck = TRUE)
>>
>
> I remember that you can also find it when you step inside an apply function:
>
>> sapply(1:10, function(x)browser())
>> Called from: FUN(1:10[[1L]], ...)
>>
>
> I apologize for being vague, it's just something that I would like to
> understand about the R language (the R word).
>
> Thank you!
>
> Gene
>
>        [[alternative HTML version deleted]]
>
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>



-- 
Jim Holtman
Data Munger Guru

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