1 引言
用windows自带的text文本在最前面会带入看不到的BOM，导致异常
2 代码
package main
import (
"strings"
"fmt"
)
func main(){
line := "// mysql数据库链接配置"
if strings.EqualFold(line[:2], "//"){
fmt.Println("this is comment")
}else{
fmt.Println("this is not comment")
}
}
运行结果如下：
# command-line-arguments test\test\testFilterRemark.go:17:11: invalid BOM in the middle of the file Compilation finished with exit code 2
如果改为：（在文本上是看不出差异性的）
func main(){
line := "// mysql数据库链接配置"
if strings.EqualFold(line[:2], "//"){
fmt.Println("this is comment")
}else{
fmt.Println("this is not comment")
}
}
运行结果如下：
this is comment Process finished with exit code 0
3.扩展资料
1.不要使用Windows自带记事本写代码（ http://rabbitfeet.net/archives/144.html）