PureScript 0.8.0 rc1 发布，静态类型语言

发布于 2015-12-16 06:48:35 | 87 次阅读 | 评论: 0 | 来源: 网友投递

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 0.8.0 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.

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)

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)

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。