Simplify Chinese translation of Scala Tour: type-inference.md #1207
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_zh-cn/tour/type-inference.md
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| val q = id(1) // type: Int | ||
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| 编译器使用参数 `MyPair` 的类型来推断出 `A` 和 `B` 的类型。对于 `x` 的类型同样如此。 |
_zh-cn/tour/type-inference.md
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| ## 参数 | ||
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| 编译器从不推断方法参数的类型。 但是，在某些情况下，当函数作为参数传递时，它可以推断出匿名函数参数类型。 |
_zh-cn/tour/type-inference.md
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| Seq(1, 3, 4).map(x => x * 2) // List(2, 6, 8) | ||
| ``` | ||
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| 方法 map 的参数是 `f: A => B`。 因为我们把整数放在 `Seq` 中，编译器知道 `A` 是 `Int` 类型 (即 `x` 是一个整数)。 因此，编译器可以从 `x * 2` 推断出 `B` 是 `Int` 类型。 |
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| ## 何时 _不要_ 依赖类型推断 | ||
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| 通常认为声明在公共 API 中的成员类型更具可读性。 因此，我们建议你为将在你的代码中向用户公开的任何 API 明确指定类型。 |
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通常认为，公开可访问的 API 成员应该具有显示类型声明。
_zh-cn/tour/type-inference.md
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| var obj = null | ||
| ``` | ||
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| 我们就不能继续重新分配值： |
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That's much better, thanks a lot.
…ing to liufengyu's suggestion
liufengyun
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Nov 30, 2018
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Simplify Chinese translation of Scala Tour: Type Inference