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Diffstat (limited to 'CHANGES.txt')
-rw-r--r-- | CHANGES.txt | 21 |
1 files changed, 19 insertions, 2 deletions
diff --git a/CHANGES.txt b/CHANGES.txt index e0c02084..ac42aa5a 100644 --- a/CHANGES.txt +++ b/CHANGES.txt @@ -1,8 +1,25 @@ -2015-02-22 version 3.0.0-alpha-2 (Ruby/JavaNano): +2015-02-26 version 3.0.0-alpha-2 (Python/Ruby/JavaNano): General - * Introduced two new language implementations (Ruby and JavaNano) to proto3. + * Introduced three new language implementations (Ruby, JavaNano, and + Python) to proto3. * Various bug fixes since 3.0.0-alpha-1 + Python: + Python has received several updates, most notably support for proto3 + semantics in any .proto file that declares syntax="proto3". + Messages declared in proto3 files no longer represent field presence + for scalar fields (number, enums, booleans, or strings). You can + no longer call HasField() for such fields, and they are serialized + based on whether they have a non-zero/empty/false value. + + One other notable change is in the C++-accelerated implementation. + Descriptor objects (which describe the protobuf schema and allow + reflection over it) are no longer duplicated between the Python + and C++ layers. The Python descriptors are now simple wrappers + around the C++ descriptors. This change should significantly + reduce the memory usage of programs that use a lot of message + types. + Ruby: We have added proto3 support for Ruby via a native C extension. |