OTP 20.0 发布了，OTP (Open Telecom Platform) 是一个开源的 Erlang 分发和一个用 Erlang 编写的应用服务器。
Erlang / OTP 20.0是一个新的主要版本，新增了一些新功能，不少（特征）改进。与第二个候选版本相比的变化如下：
ERTS:In the OTP 20 release candidates the function erlang:term_to_binary/1 changed the encoding of all atoms from ATOM_EXT to ATOM_UTF8_EXT and SMALL_ATOM_UTF8_EXT. This is now changed so that only atoms actually containing unicode characters are encoded with the UTF8 tags while other atoms are encoded ATOM_EXT just as before.
主要更新内容：
Erts:
Dirty schedulers enabled and supported on VM with SMP support.
support for “dirty” BIFs and “dirty” GC.
erlang:garbage_collect/2 for control of minor or major GC
Erlang literals are no longer copied when sending messages.
Improved performance for large ETS tables, >256 entries (except ordered_set)
erlang:system_info/1 atom_count and atom_limit
Reduced memory pressure by converting sub-binaries to heap-binaries during GC
enif_select, map an external event to message
Improvements of timers internally in the VM resulting in reduced memory consumption and more efficient administration for timers
Compiler:
Code generation for complicated guards is improved.
Warnings for repeated identical map keys. #{'a'=>1, 'b'=>2, 'a'=>3} will warn for the repeated key a.
By default there is now a warning when export_all is used. Can be disabled
Pattern matching for maps is optimized
New option deterministic to omit path to source + options info the BEAM file.
Atoms may now contain arbitrary unicode characters.
compile:file/2 has an option to include extra chunks in the BEAM file.
软件详情：https://github.com/erlang/otp/releases/tag/OTP-20.0
下载地址：https://github.com/erlang/otp/archive/OTP-20.0.zip
来自:开源中国社区
