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Update 09.2.md: 修复代码缩减问题 (#810)

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Co-authored-by: qiujinfeng <qiujinfeng@qianxin.com>
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邱锦锋
2021-10-23 11:47:34 +08:00
committed by GitHub
parent 28299b8bf8
commit 684ee99fcc
1 changed files with 6 additions and 4 deletions
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eBook/09.2.md
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@@ -22,19 +22,21 @@ ok, _ := regexp.MatchString(pat, searchIn)
```go ```go
package main package main
import ( import (
"fmt" "fmt"
"regexp" "regexp"
"strconv" "strconv"
) )
func main() { func main() {
//目标字符串 //目标字符串
searchIn := "John: 2578.34 William: 4567.23 Steve: 5632.18" searchIn := "John: 2578.34 William: 4567.23 Steve: 5632.18"
pat := "[0-9]+.[0-9]+" //正则 pat := "[0-9]+.[0-9]+" //正则
f := func(s string) string{ f := func(s string) string {
v, _ := strconv.ParseFloat(s, 32) v, _ := strconv.ParseFloat(s, 32)
return strconv.FormatFloat(v * 2, 'f', 2, 32) return strconv.FormatFloat(v*2, 'f', 2, 32)
} }
if ok, _ := regexp.Match(pat, []byte(searchIn)); ok { if ok, _ := regexp.Match(pat, []byte(searchIn)); ok {