Message-ID: <AANLkTinB_ze518SW92t8xA8hnRbB32pixi5PrdbxeyRv@mail.gmail.com>
Date: 2010-06-19T01:56:00Z
From: Hadley Wickham
Subject: nchar( NA )
In-Reply-To: <AANLkTimV5wJTILsifdwPUv7ROY-WY9buNLE937IuqVAa@mail.gmail.com>
> Value:
>
> ? ? For ?nchar?, an integer vector giving the sizes of each element,
> ? ? currently always ?2? for missing values (for ?NA?).
>
> It may be unexpected behavior, but it's *well-documented* unexpected behavior.
Oh, that must make it ok then.
For a more sensible take:
> library(stringr)
> str_length(c("", NA))
[1] 0 NA
Hadley
--
Assistant Professor / Dobelman Family Junior Chair
Department of Statistics / Rice University
http://had.co.nz/