The tutor tells the workings of yesterday’s pattern matching example. In yesterday’s post I mention that the regular expression if ($input=~/item1[^0-9]*[0-9]*.?[0-9]{0,2}/i) can find the pattern item1….$#####.## in a longer string. Here are some explanatory points: =~ is the pattern find …
Perl: regular expressions: yesterday’s code explained Read more »
The tutor demonstrates a Perl regular expression that finds an item name and its price in a string. Suppose you believe that the price of item1 is given in a string, but aren’t sure how exactly it’s said. It could, …
The tutor follows up on his post about the variable password checker. In my Nov 18 post I show a short script that checks a three-digit entry for a match with the pattern m[any character]m. The entry m4m is a …
The tutor shows off some of Perl’s pattern matching (aka regex) talents. Let’s imagine you have a laptop you share with a friend for project work. They’re not million-dollar secrets you’re keeping, but on the other hand, you don’t want …
Perl: a password (sort of) using regular expression (regex) power Read more »