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Program Repair Shop

65

Outcome

• Before: 91 lines (not counting unnecessary, noisy logging statements)

• After: 64 lines (30% reduction)

• Test suite still passes

• Except for the one test that was broken to begin with

• Several serious bugs fixed:

• Garbage collection

• Identity theft

• Observers no longer called more than once

• delete_observer works now

• Module can be subclassed

• Performance:

• I don't know.

• But I bet you don't either.

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