Re^4: REGEX omit dashes - simple but ...

Thanks guys, here's the revised statement, along with the result: if($line=~m/^\s*ACCESSION\s*NUMBER:\s*/m){$access_num=$1; $access_num =~ tr/-//d;} Result is the error message stating "Use of uninitialized value ...." ?? Thanks!!!

Comment on Re^4: REGEX omit dashes - simple but ...

Replies are listed 'Best First'.
Re^5: REGEX omit dashes - simple but ... by stevieb (Canon) on Apr 04, 2016 at 17:23 UTC
You forgot to add your capture group of `(\d*)`. However, that won't really help, as that won't capture your `-` (dashes), or any numbers after it. Why don't you show us a few lines of example data you're trying to match? Also, `Use of uninitialized...` is not an error, it's a warning. It's most likely saying that `$1` is uninitialized (because you didn't capture anything).	[reply] [d/l] [select]
Re^5: REGEX omit dashes - simple but ... by kennethk (Abbot) on Apr 04, 2016 at 17:28 UTC
You are getting an uninitialized error because you are trying to change the content of `$access_num`, to which you've assigned `$1`, but there were no parentheses in your first regular expression. Maybe you mean something like: `if ($line =~ s/^\sACCESSION\sNUMBER:\s/) { $line =~ tr/-//; }` [download] or possibly `if ($line =~ s/^\sACCESSION\sNUMBER:\s([-\d]+)$/m) { $access_num = $1; $access_num =~ tr/-//; }` [download] #11929 First ask yourself `How would I do this without a computer?' Then have the computer do it the same way.	[reply] [d/l] [select]