Re: extracting words with certain characters

[Ratazong]

The following code may get you started:

my $words = "y____x_z dddetr  x_y erre  yyy_";
while ($words =~ /([\S]*_[\S]*)/g)   {  print "$1\n";  };

It looks for any words containing an underscore-character and prints them. Due to the loop and the /g-modifier it will even all words containing an underscore

I intentionally wrote get you started, as there are some basic assumptions inside, e.g.:

• the "instance names" are seperated by whitespaces (and not commas ...)
• more than one underscore is OK, and the underscores may follwo each other
• an instance-name consisting only of underscores is fine

This webpage may help you understanding the regex.

HTH, Rata

[ColonelPanic]

Note: this will match "words" containing anything that is not whitespace. This may or may not be what you want. For example, should this be two different words?

word_1,word_2

If so, you could use a regex that matches a more traditional definition of a word:

/(\w*_\w*)/g

\w matches "word characters": alphanumeric characters plus underscores.