I think is more about returning a meaningful "empty" value, one that doesn't stop execution in unexpected ways. That's half the story, like many patterns in functional programming, this one encourages extension through function composition. Maybe a more practical example could help you see it, I wrote this one last year.
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I think is more about returning a meaningful "empty" value, one that doesn't stop execution in unexpected ways. That's half the story, like many patterns in functional programming, this one encourages extension through function composition. Maybe a more practical example could help you see it, I wrote this one last year.