正则表达式,“只是组,不捕获”,似乎不起作用 [英] Regular expression, "just group, don't capture", doesn't seem to work
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问题描述
x = "abcdefg"
x = x.match(/ab(?:cd)ef/)
不应该是什么?它不是,它实际上是abcdef
shouldn't x be abef? it is not, it is actually abcdef
为什么我的?:没有任何影响? (当然我的理解很可能是错的)
Why is it that my ?: not having any effect? (of course my understanding could very well be wrong)
推荐答案
(?:...)
仍匹配,它只是不为 \1
/ $ 1
/ .groups(1)
/ etc。
(?:...)
still matches, it just doesn't create a new group for purposes of \1
/$1
/.groups(1)
/etc.
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