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fix extending self #3

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wants to merge 1 commit into from
Closed

fix extending self #3

wants to merge 1 commit into from

Commits on Jun 26, 2019

  1. fix extending self 

    The code `l.extend(l)` wasn't working properly. What was needed, is a
defensive copy in case you try to extend the list with itself. The
problem with that was, that the `is` operator wasn't implemented for the
typed-list yet. So, this commit fixes the `is` operator for the typed
list and uses that to implement the defensive copy in case of self
referential extension. Tests included.
    @esc
    esc committed Jun 26, 2019
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