新闻 PureScript 0.7.0 "MELTDOWN" 发布 下载

PureScript 是个小巧而强大的静态类型语言，可以编译成 JavaScript。purescript 主要是由 Haskell 和 PureScript 编写的。

PureScript 0.7.0 ("MELTDOWN") 发布，主要是按照计划进行改进，在 1.0 之前简化升级路径。此最新的核心库已经更新编译到这个版本。旧版本的核心库已经不适用于这个版本，而且最新的库也不能使用旧的编译版本构建。

详细升级和迁移指导请看 wiki。

重要改进

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  psc 可执行已经使用 psc-make 替代，重命名为 psc (为了遵循 CommonJS 模块输出标准)
  
  
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  Int 和 Number 常量
  
  
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  Prelude 模块不再自动导入，必须以跟其他模块一样的方式导入
  
  
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  编译器不再包括模块，模块已经拆分到以下这些库：
  
  
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    purescript-prelude
    
    
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    purescript-eff
    
    
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    purescript-st
    
    
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    purescript-console
    
    
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    purescript-functions
    
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  数组类型的 [] 语法已经被移除，但是还是可以使用 [] 数组常量
  
  
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    [] should now be written as Array, and [a] as Array a.
    
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  Cons patterns for arrays have been removed.
  
  
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  Declaring operators in classes will now produce a warning. Changes will be coming to operators in PureScript 0.8, and moving to named members in classes with operators as aliases (e.g. (<$>) = map) should make the transition easier in the future.
  
  
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  JavaScript for the FFI can no longer be provided inline.
  
  
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    Values must instead be provided in a separate .js file, and passed to the compiler with the -ffi flag.
    
    
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    Values should be provided in the form exports.foo = ..., similar to a CommonJS module
    
    
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    The file should have a comment // module X.Y.Z where X.Y.Z is the name of the module the JS values are for.
    
    
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    See here for an example
    

功能增强

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  Module exports (@andyarvanitis). Currently, only full module exports are supported, but imported modules can be re-exported using the following syntaxurescript module M1 (module M2) where import M2
  
  
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  Documentation improvements (@hdgarrood):
  
  
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    psc-docs can now generate multiple output files, allowing documentation to be collected into functional groups.
    
    
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    A new tool psc-publish has been added, which generates module documentation in a JSON format required by Pursuit 2 (coming soon)
    
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  @puffnfresh has worked on dramatically increasing the performance of incremental builds, with improvements up to 10x compared to the previous release.
  
  
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  The new --require-path option allows the syntax of module imports in generated CommonJS modules to be customized (@garyb).
  
  
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  @etrepum has added support for building with Stack.
  
  
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  PSCi now supports computations in the Eff monad. (@paf31)
  
  
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  The compiler now emits warnings in the following cases:
  
  
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    Operator name used in type class definition (@garyb)
    
    
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    Type wildcard used (@nicodelpiano)
    
    
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    Shadowed variable name (@paf31)
    
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  @balajirrao has improved the appearance of unknown and rigid types appearing in error messages.
  
  
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  @puffnfresh has added position information to pattern match errors.
  
  
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  @puffnfresh has added some new optimizations (inlining <<< and $)
  

Bug 修复

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  psc, psc-docs and psc-bundle now support file globs as command-line arguments, fixing a bug related to the command length on Windows machines (@paf31)
  
  
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  @wuzzeb has fixed some issues in the pretty printer.
  
  
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  @mjgpy3 has improved error messages related to incorrect pattern matches on data constructors.
  

工具

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  Pulp has been updated:
  
  
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    The new psc and psc-bundle binaries are supported
    
    
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    FFI modules are now identified and compiled based on a convention
    
    
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    pulp docs now generates individual Markdown files for each source module
    
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  gulp-purescript has been updated:
  
  
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    The new psc and psc-bundle binaries are supported
    
    
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    FFI modules are now supported
    

库

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  The following libraries have been moved into the core library set:
  
  
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    purescript-lists - Strict and lazy linked list data structures
    
    
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    purescript-assert - Low level assertion library for tests
    
    
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    purescript-parallel - An applicative functor for parallel composition of asynchronous computations.
    
    
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    purescript-arrows - Arrow type classes and standard instances.
    
    
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    purescript-tailrec - A type class for stack-safe monadic tail recursion.
    
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  The requirements for libraries in the purescript-contrib organization have been tightened, to try to ensure that libraries stay maintained.
  

更多改进请看发行说明，下载：

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  linux64.sha
  
  
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  linux64.tar.gz
  
  
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  macos.sha
  
  
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  macos.tar.gz
  
  
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  win64.md5
  
  
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  win64.tar.gz
  
  
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  Source code (zip)
  

PureScript 0.7.0 "MELTDOWN" 发布下载地址