[R] How to specify multiple regular expressions for pattern argument

[Jeff Newmiller]

ls(pattern='^d.*[[:digit:]]$')
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Sent from my phone. Please excuse my brevity.

Jun Shen <jun.shen.ut at gmail.com> wrote:

>Dear list,
>
>I want to show all the objects starting with "d" and ending with a
>digit.
>How do I specify these conditions in the pattern argument
>
>I can do one condition but not two
>
>ls(pattern='^d')
>ls(pattern='[[:digit:]]$')
>
>are working.
>
>But,
>
>ls(pattern='^d'&'[[:digit:]]$') is not working.
>
>Appreciate any comment.
>
>Jun Shen
>
>	[[alternative HTML version deleted]]
>
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