#proto3

“Ollie Ollie Oxen free…Ollie Ollie Oxen free!”

This time the voice chosen is a cheery sing-song voice as a distorted chuckle forces itself through right after. His legs clacking against the floor in a…you guessed it…normal jester dance, hands up and swaying. Yes he did know that he was definitely gonna get himself some claws, but what harm was him having done fun with his other self?

[doom music intensifies]

You. I thought you would know better.

Proto3 is the new version of Google Protobuf with various enhancements and additions. Let's go over them one by one.

1. Since all fields are optional by default. Hence "optional" keyword has been done away with. If nothing is specified, it will be considered optional. (Protof files just became a tad smaller)

2. Support to group fields are not longer there. Group was just another way of nesting information in messages. But it was inefficient way to do (better way, Nested Messages). Hence is no longer supported.

3. Packed repeated fields were introduced in 2.1.0. Repeated fields needed to be explicitly set packed=true to use this encoding. In proto3, repeated primitive fields have been made packed by default. They have to be set false to be disabled.