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2 points by simonb 4310 days ago | link | parent

For one it breaks the expectation of a strongly typed language.

If something goes wrong and you want to fail as soon as possible not propagate the defect through the system.



1 point by reitzensteinm 4310 days ago | link

Oh, it definitely throws strong typing right out of the window.

The reason I suggested it is because it would seem that almost all of the time where you go to do an increment on a nil value, you're working with an uninitialized element (not necessarily in a hash map) and treating that as 0 (as you're doing an increment) would in a certain sense be reasonable behaviour.

But I guess you're right, in the case where nil does represent an error, it'll be two steps backwards when you go to debug the thing.

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