[Linux] Linux 6RD

Linux 6RD HOWTO
如何在IPv4與IPv6共存下連線
IPv6 Forum Taiwan
Comcast 6RD - IPv6 Information Center
RFC 5969 - IPv6 6RD
2012 全球 IPv6 高峰會議
中華電信研究所IPv6測試實驗室
IPv6測試
IPv6實用技術手冊

Routers support IPv6
Top 5 IPv6-ready Wireless Routers

[iOS] App Store Approval Process

App Store Approval Process

[iOS] iOS download

http://www.betaio.so/#
降刷或平刷
How can I upgrade iOS 6 beta to iOS 6 public release

[iOS] SDK Compatibility Guide

SDK Compatibility Guide

[iOS] iOS 6 - Contact's Privacy

Programmatically Request Access to Contacts in iOS 6
iOS 6 Address Book not working?
How do I correctly use ABAddressBookCreateWithOptions method in iOS6?

Request Permission
ABAddressBookRef addressBookRef = ABAddressBookCreateWithOptions(NULL, NULL);
if (ABAddressBookGetAuthorizationStatus() == kABAuthorizationStatusNotDetermined) {
ABAddressBookRequestAccessWithCompletion(addressBookRef, ^(bool granted, CFErrorRef error) {
// Do whatever you need.
});
}


iOS SDK Release Notes for iOS6

[Programming] scanf()

Issue: scanf() by char or string goes wrong result.

#include <stdio.h>

int main(int argc, char **argv)
{
        int valA;
        char valB;

        scanf ("%d", &valA);
        printf ("valA=%d\n", valA);
        scanf ("%c", &valB);
        printf ("valB=%c\n", valB);

        return 0;
}

Result:

3
valA=3
valB=


Expect result:

3

valA=3

4

valB=4

Reason: scanf() doesn't handle new line character, "\n".

Solution1: Discard the last character "\n" by "%*c".


#include <stdio.h>

int main(int argc, char **argv)
{
        int valA;
        char valB;

        scanf ("%d%*c", &valA);
        printf ("valA=%d\n", valA);
        scanf ("%c%*c", &valB);
        printf ("valB=%c\n", valB);

        return 0;
}


Solution2: Add a space character to second scanf().

#include <stdio.h>

int main(int argc, char **argv)

{

        int valA;

        char valB;

        scanf ("%d", &valA);

        printf ("valA=%d\n", valA);

        scanf (" %c", &valB); // It is " %c". There is a space character in front of %c.

        printf ("valB=%c\n", valB);

        return 0;

}

Solution3: Read out the "\n" by getchar();

#include <stdio.h>

int main(int argc, char **argv)
{
        int valA;
        char valB;

        scanf ("%d", &valA);
        getchar();
        printf ("valA=%d\n", valA);

        scanf ("%c", &valB);
        getchar();
        printf ("valB=%c\n", valB);

        return 0;
}


[iOS] App communication

iOS SDK: Working with URL Schemes