Re^4: Stupid mistakes I repeatedly make

I deliberately use shift now, more and more, for two reasons:

I have a personal coding convention that all methods should begin with "my $self = shift" (or "my $class = shift" for class methods).
It opens up a place for me to comment on the expected type:
```
sub map_names {
  my $mapping = shift; # hashref of first-last names
  my $insensitive = shift; # boolean: should uppercase be the same?
  my @names = @_; # remaining parameters are names
  ...
}
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```
With the "my ($x, $y, $z) = @_" style, I don't have a clean place for those comments, unless I want to break the list on the left across many lines (ick).

In Section Meditations