PureScript 0.8.0 rc1 发布，静态类型语言

rh007

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　　PureScript 0.8.0 rc1 发布，更新如下：
重大变更
　　None, but there are lots of new warnings related to upcoming breaking changes in 0.9:

• 　　Operators as aliases will become mandatory, and regular operators (as functions) will now generate warnings.
  
• 　　Non-exhaustive functions will get a Partial constraint in 0.9, so the exhaustivity checker will now attempt to generate warnings by looking for Partial constraints in scope.
  
• 　　The qualified import syntax has been deprecated.
  
• 　　Class imports will use the new class syntax in 0.9 and the alternative syntax is deprecated.
  

提升

• 　　Add native Partial constraint (@garyb)
  
• 　　Reduce backtracking in parser to hopefully improve quality of parsing error messages (@paf31)
  
• 　　Drop requirement to parenthesize single constraints in instance contexts (@garyb)
  
• 　　Case expressions can now match multiple values (@natefaubion)
  
• 　　Add operator aliases (@garyb)
  
• 　　Show identifiers correctly in ctags (@nwolverson)
  
• 　　Fix #1523, add --json-errors flag for editor integrations (@paf31)
  
• 　　Check integer values are within range in codegen (@garyb)
  
• 　　Module Imports
  
  
  
  • 　　Use class keyword for class references in imports (@garyb)
    
  • 　　Type imports no longer require () (@garyb)
    
  • 　　Allow import hiding with qualified imports (@garyb)
    
  • 　　Naming conflicts are now resolved at the use site (@garyb)
    
  
  
• 　　Error Messages
  
  
  
  • 　　Fix #1662, display extra type info in instance errors (@paf31)
    
  • 　　Add information about skolem constants to type errors (@paf31)
    
  • 　　Sort rows in unification errors (@paf31)
    
  
  
• 　　Warnings
  
  
  
  • 　　Warn on unspecified imports (@garyb)
    
  • 　　Warn when import X hiding (..) imports nothing (@garyb)
    
  • 　　Warn on duplicate imports and exports (@garyb)
    
  • 　　Warn about unused class imports (@garyb)
    
  
  

Bug 修复

• 　　Renamer updates, fixes naming bug in some unlikely situations (@garyb)
  
• 　　Fix #1645, implement new indentation rules for types to avoid very wide errors (@paf31)
  
• 　　Fix "resource exhausted" issue on MacOS (@mgmeier)
  
• 　　Fix #1664, check kind before expanding wildcards. (@paf31)
  
• 　　Fix up shadowed module names in JS codegen (@garyb)
  
• 　　Fix #1185, fix #1369, add everythingWithScope traversal to correct some scoping issues. (@paf31)
  
• 　　Fix two cases where errors were missing context (@garyb)
  
• 　　Fix #1636, instantiate polytypes fully, even under constraints. (@paf31)
  
• 　　Fix missing data constructors in re-exports (@garyb)
  
• 　　Fix codegen error with instance for re-exported class (@garyb)
  
• 　　Fix #1479, encode .js files as UTF8. (@paf31)
  

其它

• 　　Fix #1700, remove warnings for syntactic features removed in 0.7.0 (@paf31)
  
• 　　Fix psc-publish test (@passy)
  

　　下载页面：0.8.0-RC1

　　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。