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Lochlan/perl-complaint-of-the-day.md

Last active August 15, 2017 05:51
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perl-complaint-of-the-day.md

Perl Complaints of the Day

  1. Only lambdas can be closures, not named subroutines.

  2. The idiomatic way of getting a list’s length is to assign it to a scalar.

    my @coolList = (1, 2, 3);
my $coolListLength = @coolList;

  3. There is no boolean data type in Perl; 0, '0', '', (), and undef are falsy and all other values are truthy. This makes it very hard to represent true or false alongside those other data types. The JSON::XS library handles this awkwardness with references: \0 and \1.

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