regex - 使用 scan 方法 + regexp 将字符串分解为单词，如果单词有 `' ` 字符，则删除该字符及其后的所有内容

Question

sample_string = "let's could've they'll you're won't"
sample_string.scan(/\w+/)

上面给了我:

["let", "s", "could", "ve", "they", "ll", "you", "re", "won", "t"]

我想要的:

["let", "could", "they", "you", "won"]

一直在玩 https://rubular.com/并尝试像 \w+(?<=') 这样的断言但没有运气。

Answer 1

给定:

> sample_string = "let's could've they'll you're won't"

您可以进行拆分和映射:

> sample_string.split.map{|w| w.split(/'/)[0]}
=> ["let", "could", "they", "you", "won"]