PureScript 0.10.4 发布，静态类型语言

PureScript 0.10.4 发布了，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。

主要更新内容：

新功能

Deriving Functor：

The Functor type class can now be derived using the standard derive instance syntax:

newtype F a = F { foo :: Array a, bar :: a }

derive instance functorF :: Functor F

User-Defined Kinds：
Custom kinds can now be defined using the foreign import kind syntax:
```
foreign import kind SymbolList
```
Custom kinds can be ascribed to types using foreign import data declarations, as usual:
```
foreign import data Nil :: SymbolList
foreign import data Cons :: Symbol -> SymbolList -> SymbolList
```
Source Maps in psc-bundle：psc-bundle will now generate source maps if the--source-maps flag is used.
Solving CompareSymbol and AppendSymbol：Support for the new purescript-typelevel-prelude library has been added to the compiler. CompareSymbol and AppendSymbol constraints will now be solved automatically for literal symbols.
New psc-package Features

完整更新内容请查看发行日志

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