[R] matching strings in a list

[John McKown]

On Thu, Jul 16, 2015 at 12:40 PM, tryingtolearn <inshique at ymail.com> wrote:

> Say I have a list:
> [[1]] "I like google"
> [[2]] "Hi Google google"
> [[3]] "what's up"
>
> and they are tweets. And I want to find out how many tweets mention google
> (the answer should be 2).
> If I string split and unlist them, then I would get the answer of 3. How do
> I make sure I get just 2?
>

​NROW(grep("google",list,ignore.case=TRUE))​


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John McKown

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