[R] regular expression submatch?

sjaffe sjaffe at riskspan.com
Mon Feb 1 19:57:40 CET 2010

What is the simplest way to extract a matched subexpression? 

Eg. in perl you can do

"hello world" =~ m/hello (.*)/  

which would return 1(true) and set $1 to the matched subexpression "world".

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