小编YBW*_*YBW的帖子

如何在python中为多行分配添加注释,在C中可能使用以下语法:

char sc[] = "\x31\xdb"                  /* xor %ebx, %ebx       */
            "\x31\xc9"                  /* xor %ecx, %ecx       */
            "\xb8\x46\x00\x00\x00"      /* mov $0x46, %eax      */
            "\xcd\x80"                  /* int $0x80            */
            "\x31\xdb"                  /* xor %ebx, %ebx       */
            "\xb8\x01\x00\x00\x00"      /* mov $0x1, %eax       */
            "\xcd\x80";                 /* int $0x80            */

但在python中使用转义换行符相同

sc = "\x31\xdb" \   # xor %ebx, %ebx
     "\x31\xc9" \   # xor %ecx, %ecx
     "…"

如何将go的类型从uint8转换为unit32？
只需代码:

package main

import (
    "fmt"
)

func main() {
    uInt8 := []uint8{0,1,2,3}
    var uInt32 uint32
    uInt32 = uint32(uInt8)
    fmt.Printf("%v to %v\n", uInt8, uInt32)
}

〜> 6g test.go && 6l -o test test.6 &&./ test
test.go:10:无法将uInt8(类型[] uint8)转换为uint32类型

我的目标平台是OS X 10.10/Xcode 7.2我正在尝试保存NEVPNManager的首选项,我在domain = NEConfigurationErrorDomain中出错:

Error Domain = NEConfigurationErrorDomain Code = 10 "permission denied" UserInfo = 0x610000073280 {NSLocalizedDescription = permission denied}

示例代码如下:

let manager = NEVPNManager.sharedManager()
manager.loadFromPreferencesWithCompletionHandler { (error) -> Void in
    if((error) != nil) {
        print("VPN load preferences error")
        print(error!)
        exit(0)
    }
    if manager.`protocol`  == nil {
        let proto = NEVPNProtocolIKEv2()
        proto.serverAddress = "host.net"
        proto.username = "username"
        Keychain.save("vpnpassword", data: "password".dataUsingEncoding(NSUTF8StringEncoding)!)
        proto.passwordReference = Keychain.load("vpnpassword") // I got the same error without passwordReference too
        proto.authenticationMethod = NEVPNIKEAuthenticationMethod.None
        manager.`protocol` = proto …