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Jan 4th, 2013
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  1. d <- data.frame(a = c("A_foo1", "B_foo2", " _foo3"))
  2.  
  3. a
  4. A
  5. B
  6. " "
  7.  
  8. a <- c("A_foo1", "B_foo2", " _foo3")
  9. gsub("_.*", "", a)
  10. #[1] "A" "B" " "
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