Re: [OT]: Re^9: What's the right way to write a method which returns one line at a time from a file?

in reply to [OT]: Re^9: What's the right way to write a method which returns one line at a time from a file?
in thread What's the right way to write a method which returns one line at a time from a file?

Yes, I agree. I especially like that there is only one return statement. In contrast, using multiple return statements violates the principle of DRY.

Related items from Conway's Perl Best Practices, Chapter 6 (Control Structures):

Avoid cascading an if
Use table look-up in preference to cascaded equality tests
When producing a value, use tabular ternaries

Conway recommends formatting tabular ternaries with the colon at the front, for example:

             # When their name is...                Address them as...
my $salute = $name eq $EMPTY_STR                  ? 'Customer'
           : $name =~ m/(.*), \s+ Ph[.]?D \z /xms ? "Dr $1"
           :                                        $name
           ;
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because, if you squint, it looks like a lookup table, thus converting the notoriously impenetrable ternary syntax into a familiar and easy to understand lookup table.

Update: Fixed typo in Conway's example my $salute statement above (removed extra ?). Thanks AnomalousMonk.

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