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新闻 Erlang/OTP 20.0 发布,动态类型编程语言 下载

Discussion in '软件资讯' started by 漂亮的石头, 2017-06-24.

  1. 漂亮的石头

    漂亮的石头 版主 Staff Member

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    Erlang/OTP 20.0 是一个新的主要版本,带来了新功能、一些特征以及不兼容性的改进。

    与第二次发布的 RC 版相比,只有很小的变化,下面列出了其中的一部分:


    • ERTS:


      • erlang:term_to_binary/1 更改了所有 atoms 的编码,由 ATOM_EXT 变为 ATOM_UTF8_EXT 和 SMALL_ATOM_UTF8_EXT。因此只有包含 unicode 字符的 atom 才使用 UTF8 标签编码,其他的 atoms像以前一样编码为 ATOM_EXT。

    以下是 OTP 20 中的一些重要更新:

    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.

    更新内容较多,详情点此查阅

    下载地址:


    发布主页

    Erlang 是一个结构化,动态类型编程语言,内建并行计算支持。最初是由爱立信专门为通信应用设计的,比如控制交换机或者变换协议等,因此非常适合于构建分布式,实时软并行计算系统。
    Erlang/OTP 20.0 发布,动态类型编程语言下载地址
     
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