红宝石是强力还是微弱的打字？ [英] Is ruby strongly or weakly typed?

问题描述

ruby​​是强类型还是弱类型？

Is ruby strongly or weakly typed ?

大概对于Javascript也是如此。

Presumably the same is true for Javascript.

推荐答案

Ruby是强类型。

强类型意味着对象的类型（不在OOP意义上，但是在一般意义上）在执行需要某种类型的操作之前进行检查。

Strong typing means an object's type (not in the OOP sense, but in a general sense) is checked before an operation requiring a certain type is executed on it.

弱类型意味着没有进行检查以确保操作可以成功在对象上。 （例如，当函数访问字符串和浮点数组时，如果没有进行类型检查，则允许操作）

Weak typed means that no checking is done to ensure that the operation can succeed on the object. (For example, when a function accesses a string like and array of floats, if no type checking is done then the operation is allowed)

编辑：
它是自这个答案发布以来已有6年了，我认为这需要一些额外的澄清：

It's been 6 years since this answer was posted and I think it warrants some extra clarifications:

多年来，类型安全是一个表盘不是绝对的的概念开始用于支持二进制含义（是/否）

Over the years the notion that "type safety is a dial not an absolute" started to be used in favor of the binary meaning (yes/no)

与大多数典型的动态语言相比，Ruby是更强的类型（带有呃）。 ruby需要明确的转换语句IE：Array（foo），42.to_i，Float（23）这一事实使得Ruby输入表盘更接近强类型结束而不是弱类型 。

Ruby is "stronger" typed (with an "er") than most typical dynamic languages. The fact that ruby requires explicit statements for conversion IE: Array("foo"), "42".to_i, Float(23), brings the Ruby typing dial closer to the "Strong Typed" end of spectrum than the "weak typed".

所以我会说Ruby是比大多数常见动态语言更强大的动态语言

So I would say "Ruby is a stronger typed dynamic language than most common dynamic languages"

这篇关于红宝石是强力还是微弱的打字？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！