Re: Array Plus Operator

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'

Comment on Re: Array Plus Operator Select or Download Code

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Re^2: Array Plus Operator by SleepyJay (Beadle) on Dec 15, 2017 at 15:01 UTC
That's what I assumed, but thanks for the sanity check! Odd looking legacy code gives me deep paranoia when changing it! The current theory in the office is that someone "fat-fingered" it... since the "+" and "[" are so close on the keyboard... otherwise... NFI Or maybe you could pass in a default to use if $self->bar was false... so it was originally `@{ $self->bar \|\| +shift }` and then the code evolved and someone replaced the "shift" with "[]" and left the "+" around, JIC	[reply] [d/l]
Re^3: Array Plus Operator by AnomalousMonk (Archbishop) on Dec 15, 2017 at 18:08 UTC
`... someone "fat-fingered" it... since the "+" and "[" are so close on + the keyboard...` [download] But "+" also requires a shift, so it would have to be a "hyper-caffeinated-fat-finger." Give a man a fish: `<%-{-{-{-<`	[reply] [d/l] [select]