英文:
regular expression to match exact word with boundries
问题
我正在使用golang的正则表达式来匹配具有边界的精确单词，例如"apple"，"co."，我不能简单地使用\b，因为单词可能在末尾有非字母数字字符，就像例子中的"co."一样。
我尝试了以下代码：
test := (?i)\b(co.)(?:\s|$)
re = regexp.MustCompile(test)
matches = re.FindAllString("co. is a secret shortcut ", -1)
但是这会给我返回"co. "，我想直接得到"co."，我该如何调整我的正则表达式来实现这一点。
提前感谢。
英文:
I am using golang regex to match an exact word with boundaries, for example "apple", "co.", I cannot simply use \b, because the word can have non alphanumeric char in the end, like the example "co."
I try something like:
test := `(?i)\b(co.)(?:\s|$)`re = regexp.MustCompile(test)matches = re.FindAllString("co. is a secret shortcut ", -1)
but this will give me "co. ", I would like to directly get "co.", how can I adjust my regex to achieve it.
Thanks in advance
答案1
得分: 2
你可以使用FindAllStringSubmatch来访问捕获组：
package mainimport ("fmt""regexp")func main(){// your code goes heretest := `(?i)\b(co.)(?:\s|$)`re := regexp.MustCompile(test)matches := re.FindAllStringSubmatch("co. is a secret shortcut ", -1)for _, match := range matches {fmt.Printf("'%s'", match[1])}}
输出：
'co.'
英文:
You could use FindAllStringSubmatch to give you access to the capture group:
package mainimport ( "fmt""regexp")func main(){// your code goes heretest := `(?i)\b(co.)(?:\s|$)`re := regexp.MustCompile(test)matches := re.FindAllStringSubmatch("co. is a secret shortcut ", -1)for _, match := range matches {fmt.Printf("'%s'", match[1])}}
Output:
'co.'
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