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What does this line of Perl mean?
if (/ile.*= (\d*)/ || /ile.*=(\d*)/ ) {
I am particularly interested in what the “/ile” means, and why both sides of the || are identical.
The syntax
/.../contains a regular expression. The two sides of the||are subtly different – the second one has no space after the equals sign.The first
/.../decodes as “match the letters ‘i, l, e’ then any character (.) any number of times (*), then an equals (=), then a space, then there is a capture (the brackets) that grabs zero or more digits (\d*).The match is not tied to a Perl variable so it will be against the default scalar
$_.