Re: Regular Expression to find Word Prefixes


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Re: Regular Expression to find Word Prefixes

by vladdrak (Monk)

on May 19, 2002 at 23:15 UTC ( [id://167738]=note: print w/replies, xml )

Need Help??

in reply to Regular Expression to find Word Prefixes

Well, if you can assume that the data will always follow the pattern you presented, then you can split on a space:

my @words=(
  "12 chem1",
  "1/2 chem2",
  "(N+1) chem3",
  "2M chem4",
  "N chem5"
);

# given an array of words, returns an 
# array of corresponding prefixes

sub get_prefixes {
  map { (split)[0] } @_;
}

print join(",",get_prefixes(@words));
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-Vlad