Re^2: advance Regex

Works fantastic. but can you explain the second and third regex to me? it will be your huge favour on me. this one:

$content =~ /(Putative.*?);/s;
my $acids = $1;
$acids =~ s/\n\s+/ /g;
[download]

and this one

$content =~ /TITLE\s*(.*?)\n\s+JOURNAL/s;
my $aminoAcids = $1;
$aminoAcids =~ s/\n\s+/ /g;
[download]

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Re^3: advance Regex by hippo (Archbishop) on Apr 28, 2020 at 13:15 UTC
The first one says to capture everything from the first P of Putative up to but not including the first following semi-colon. Subsequently the whitespace is collapsed. The second one says to capture everything after "TITLE" and its trailing space(s) up to but not including a newline followed by whitespace followed by "JOURNAL" (which is the following key). Again, subsequently the whitespace is collapsed. Both of these require the `/s` modifier. See perldoc perlre for details of the modifiers. You can also fall back on YAPE::Regex::Explain for any regexen that you are having trouble understanding, although it doesn't include support for more modern features, alas.	[reply] [d/l]
Re^4: advance Regex by shabird (Sexton) on Apr 28, 2020 at 13:32 UTC
Thank you so much for explaining :)	[reply]