flatbuffers

A summary of what is in this release since 1.12.0:

• Support for optional scalars in most languages.
• Rust Verifier, Object API and FlexBuffers support, and many API improvements.
• Overhaul of TypeScript support.
• gRPC for many languages brought up to date.
• C++ compile time field reflection.
• JS FlexBuffers support.
• Kotlin FlexBuffers and platform support.
• Swift Object API and many Swift performance improvements.
• Lua supports LuaJIT and many more fixes.
• Python FlexBuffers support.
• Many other fixes and smaller improvements, 371 commits since 1.12.0

Note, "2.0" doesn't signify any kind of major overhaul of FlatBuffers, it is merely trying to be more semver compatible, and this release does have breaking changes for some languages much like all releases before it.

A summary of what is in this release since 1.11.0:

• An official Swift port! (including gRPC support).
• A Kotlin port!
• Object API and native JSON support for C#.
• Object API and gRPC support for Python.
• Object API for Go.
• FlexBuffers for Java.
• Many other fixes and smaller improvements, 247 commits since 1.11.0

A summary of what is in this release since 1.10.0:

• More accurate C++ float handling, NaN handling, limit checking.
• Java optimization: faster object accessors, faster UTF8 conversion.
• A lot of Rust port improvements.
• Vector of union JSON parsing.
• Parser can now work from binary schemas.
• Python: numpy vector support.
• Packaging: Snap & RPM support.
• Many improvements to our CI, added Bazel CI, dockerized language tests.
• Many other fixes and smaller improvements, 169 commits since 1.10.0

A summary of what is in this release since 1.9.0:

• Rust support!
• Dart support!
• Lua support!
• Lobster support!
• C++: Improved / more correct verifier, compare operator in generated code, new/improved move operators for many data types, string_view support.
• Java & C# support vectors of unions.
• Many other fixes and smaller improvements, 145 commits since 1.9.0

A summary of what is in this release since 1.8.0:

• Further optimized C++ memory usage for FlatBufferBuilder: from 3 to 1 dynamic allocations (!)
• GRPC support in Java & Maven.
• Build files for Bazel and Conan.
• Prefixed size support for Java/C#/Python.
• Typescript docs.
• Many other fixes and improvements, 80 commits since 1.8.0

A summary of what is in this release since 1.7.0:

• Vtable trimming in all language implementations: can reduce binary size 10-20%!
• Mini-reflection tables (in C++) for debug-print, etc.
• Improved .proto conversion.
• Vectors of unions now also supported in JS/TS/PHP/C.
• Improved namespace handling.
• Boolean types in FlexBuffers.
• Python Numpy vector support.
• Nested FlatBuffer JSON parsing.
• C++98 (stlport) support for core FlatBuffers and FlexBuffers.
• JSON Schema output support.
• Many other fixes and improvements, 90 commits since 1.7.0

This is a bug fix release.

• Calling CreateVector in C++ on a vector of Offset types with an explicit template parameter (of that Offset type) of could cause the wrong specialization to be selected in 1.7.0. This should affect very few people, but safer to use 1.7.1 just in-case. flatc from 1.7.0 is compatible with 1.7.1.

A summary of what is in this release since 1.6.0:

• Typescript support!
• Improved GRPC API with proper zero-copy path. BREAKS API
• Fixed many issues with ReleaseBufferPointer functionality BREAKS API
• FlexBuffers: nested in FlatBuffer accessors, (nested) parsing from JSON, JSON output.
• Vectors of unions and unions of structs/strings (C++ only so far).
• Several speed optimizations for larger data types in C++ FlatBufferBuilder.
• Schema registry functionality.
• Improvements to the object API.
• Improved docs: C# API, vector of structs.
• Many other fixes and improvements, 116 commits since 1.6.0

A summary of what is in this release since 1.5.0:

• First ever version of FlexBuffers!
• npm package support.
• Vectors of unions now supported (C++ only so far).
• Improvements to the object API.
• Some speed optimizations.
• Many other fixes and improvements, 48 commits since 1.5.0

A summary of what is in this release since 1.4.0:

• GRPC support for Go.
• C# accessors now based on structs (generates less garbage).
• Improved object API (e.g. choice of pointer types, external references).
• Flatc can test for conformity against older schema.
• In-place binary search lookups for C# and Java.
• Documentation improvements.
• Many other fixes and improvements, 133 commits since 1.4.0

A summary of what is in this release since 1.3.0:

• Support for GRPC!
• C++ now has an object API: read & write to generated C++ objects.
• Mutation support in Go & JS.
• Many improvements in name space handling and general code generation.
• Libfuzzer based tests.
• Documentation for C in the main project.
• Many other fixes and improvements, 300 commits since 1.3

A summary of what is in this release since 1.2.0:

• Support for PHP!
• Much improved documentation: a tutorial shared by all languages.
• API improvements for Python, C#, and others.
• C++ code can now be built with GCC as low as 4.4, and doesn't rely on exceptions anymore.
• JSON parser can now skip unknown fields.
• Benchmark code available in benchmark branch.
• Many other fixes and improvements, 140+ commits since 1.2

A summary of what is in this release since 1.1.0:

• Support for JavaScript and Python!
• A much improved C# and Go API and implementation.
• Simple mutable FlatBuffers functionality (C++/Java/C#).
• New reflection functionality: binary schemas, and more dynamic read/mutate (C++, relflection.h).
• Much improved .proto parsing.
• Many other fixes and improvements, 200+ commits since 1.1

A summary of what is in this release since 1.0.0:

• An extensive overhaul to the Java API.
• Out-of-the-box support for C# and Go.
• An optional verifier to make FlatBuffers practical in untrusted scenarios.
• .proto parsing for easier migration from Protocol Buffers.
• Optional manual assignment of field IDs.
• Dictionary functionality through binary search on a key field.
• Bug fixes and other improvements thanks to 200+ commits from 28 contributors.

This is an interim release before 1.1.0, with important bug fixes and a few new features:

• C# is now supported.
• flatc is able to convert .proto files to FlatBuffer schemas for easier migration from Protocol Buffers.
• Java FlatBuffers functionality is now more friendly, with better generated code for tables and vectors in particular.
• Support for required fields.
• C++ enums are now strongly typed.
• Option to generate dependent includes in C++
  ... and many smaller fixes.

This is an interim release before 1.1.0, with important bug fixes and a few new features:

• Schemas can now include other schemas directly.
• Schemas can refer to types from unrelated namespaces.
• JSON parsing & writing supports unicode escape codes (\u).
• Enum value prefixing in C++ is now an option.

This is an interim release before 1.1.0, with important bug fixes and a few new features:

• Initial support for the Go programming language.
• Verification functionality allows safe access of buffers from untrusted sources.
• File identification allows convenient magic-number sanity checks when a FlatBuffer is used as a file format.
• Ability to manually assign field id's in the schema.
• Improved enum parsing functionality in JSON.
• bit_flags for enums.
• Nested FlatBuffer support.
• Vector iterators.

This is the initial release. See http://google.github.io/flatbuffers/ for more.