There's no difference between these two lines 

@{ $self->bar || +[] };
@{ $self->bar ||  [] };

[download]

since there is no ambiguity. [] returns a scalar - a reference to an anonymous, empty array - in either case. But the original author perhaps thought it was needed. AFAIK this doesn't behave different in any perl5.

perl -le'print map{pack c,($-++?1:13)+ord}split//,ESEL'

In reply to Re: Array Plus Operator by shmem
in thread Array Plus Operator by SleepyJay

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