mirror of
https://github.com/unknwon/the-way-to-go_ZH_CN.git
synced 2025-08-11 22:06:51 +08:00
37 lines
788 B
Go
37 lines
788 B
Go
// pattern.go
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package main
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import (
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"fmt"
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"regexp"
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"strconv"
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)
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func main() {
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searchIn := "John: 2578.34 William: 4567.23 Steve: 5632.18" // string to search
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pat := "[0-9]+.[0-9]+" // pattern search for in searchIn
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f := func(s string) string {
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v, _ := strconv.ParseFloat(s, 32)
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return strconv.FormatFloat(v*2, 'f', 2, 32)
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}
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if ok, _ := regexp.Match(pat, []byte(searchIn)); ok {
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fmt.Println("Match found!")
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}
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re, _ := regexp.Compile(pat)
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str := re.ReplaceAllString(searchIn, "##.#") // replace pat with "##.#"
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fmt.Println(str)
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// using a function :
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str2 := re.ReplaceAllStringFunc(searchIn, f)
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fmt.Println(str2)
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}
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/* Output:
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Match found!
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John: ##.# William: ##.# Steve: ##.#
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John: 5156.68 William: 9134.46 Steve: 11264.36
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*/
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