undefined | Better HN

0 pointsLudwigNagasena1y ago0 comments

What basic properties no longer hold?

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Uninitialized variables are zero. Composite literals may omit fields, and they'll be zero. Map accesses for nonexistent keys return zero values. Channel receives from closed channels return zero values. make returns zero-valued slices. Comma-ok style type assertions return zero values. Slices are fat pointers where the zero value avoids an allocation for data.

LudwigNagasenaOP1y ago

That would still hold. Those things just wouldn’t be typed as non-nullable.

yencabulator1y ago

Now you're creating a flavor of types that cannot be used in many places. Or worse, a flavor of types that when added to a struct breaks existing uses. That'd be a major change.

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yencabulator1y ago

LudwigNagasenaOP1y ago

That would still hold. Those things just wouldn’t be typed as non-nullable.

yencabulator1y ago

Now you're creating a flavor of types that cannot be used in many places. Or worse, a flavor of types that when added to a struct breaks existing uses. That'd be a major change.

1 more reply

j / k navigate · click thread line to collapse