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pattern.go
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pattern.go
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// pattern.go
package main
import (
"fmt"
"regexp"
"strconv"
)
func main() {
searchIn := "John: 2578.34 William: 4567.23 Steve: 5632.18" // string to search
pat := "[0-9]+.[0-9]+" // pattern search for in searchIn
f := func (s string) string {
v, _ := strconv.ParseFloat(s, 32)
return strconv.FormatFloat(v * 2, 'f', 2, 32)
}
if ok, _ := regexp.Match(pat, []byte(searchIn)); ok {
fmt.Println("Match found!")
}
re, _ := regexp.Compile(pat)
str := re.ReplaceAllString(searchIn, "##.#") // replace pat with "##.#"
fmt.Println(str)
// using a function :
str2 := re.ReplaceAllStringFunc(searchIn, f)
fmt.Println(str2)
}
/* Output:
Match found!
John: ##.# William: ##.# Steve: ##.#
John: 5156.68 William: 9134.46 Steve: 11264.36
*/