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Golang
How to match multiple words or strings using Golang regular expression?
How to match multiple words or strings using Golang regular expression?
May 31, 2024 am 10:32 AM
Golang regular expressions use the pipe character | to match multiple words or strings, separating each option as a logical OR expression. For example: matches "fox" or "dog": fox|dog matches "quick", "brown" or "lazy": (quick|brown|lazy) matches "Go", "Python" or "Java": Go|Python |Java matches a word or 4-digit postal code: ([a-zA-Z] |1[0-9]{3}) matches a string starting or ending with "from" or "to": (^[Ff] ro?m)|([Tt]o)$
How to use Golang regular expression to match multiple words or strings
Golang’s regular expressions provide The | (pipe character) operator is used to match multiple words or strings. The | operator separates each option into a logical OR expression.
Matching Code
import (
"fmt"
"regexp"
)
func main() {
text := "The quick brown fox jumped over the lazy dog."
// 匹配 "fox" 或 "dog"
matched, err := regexp.MatchString("fox|dog", text)
if err != nil {
fmt.Println(err)
return
}
// 輸出：true
// 匹配 "quick"、"brown" 或 "lazy"
matched, err = regexp.MatchString("(quick|brown|lazy)", text)
if err != nil {
fmt.Println(err)
return
}
// 輸出：true
}More Examples
- ##(Go|Python|Java)
Matches "Go", "Python" or "Java". - ([a-zA-Z] |1[0-9]{3})
Matches a word or a 4-digit postal code. - (^[Ff]ro?m)|([Tt]o)$
Matches a string starting or ending with "from" or "to".
Notes
- ##|
- operator precedence is higher than
,Operator. If grouping is required, use brackets().If there is no expression after the| - operator, an error will be thrown.
The| - operators in regular expressions also have other meanings in contexts other than string matching. Please use it with caution according to specific usage scenarios.
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