Just to nitpick: you're leaving a lexical $parser around that the condensed form doesn't, so it is actually equivalent to 
my $book;
{
    my $parser = Spreadsheet::ParseExcel->new()
    $book = $parser->Parse($filename);
}

[download]
or, as I'd prefer, 
my $book = do {
    my $parser = Spreadsheet::ParseExcel->new()
    $parser->Parse($filename);
};

[download]
logically followed by 
my $book = do {
    my $parser = Spreadsheet::ParseExcel->new()
    $parser
}->Parse($filename);

[download]
which is (and here's the important step) obviously equivalent to my $book = do { Spreadsheet::ParseExcel->new() }->Parse($filename); which is trivially equivalent to my $book = Spreadsheet::ParseExcel->new()->Parse($filename); Tightly scoping with a block instead is generally better practice. The garbage collector will clean up after you without any extra effort on your side anyway.

Makeshifts last the longest.

In reply to Re^2: Style Question: Throwaway Objects by Aristotle
in thread Style Question: Throwaway Objects by seattlejohn

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