rn keychain

" for the real-computer commissioning of the PC authorization request. Then pull the interface down and click "Continue" at the bottom of the interface to create it. 7This step, we continue to click on "Continue". This step is to say, need the computer keychain configuration file, I will tell you later, so we first click "Continue" to enter the next step. 8This step requires us to upload the keychain co

Paper/a chestnut Wow (Jane book author)Original link: http://www.jianshu.com/p/65c92cd1c0eeCopyright belongs to the author, please contact the author to obtain authorization, and Mark "book author"."Brush Coupons" is to brush the group or the public to do the first-order discount of the app coupons, they create a few constraints for the "First order", one of which is the uniqueness of the device-participated in the can no longer participate, it is necessary to obtain the unique identity of the d

developers change their mind again use Keychain to save the Udid, so that even if the app is deleted and then loaded back, you can read back from the keychain.First save the device's UUID, you can use the class method + (ID) UUID is a class method, call the method can obtain a UUID. A UUID string can be obtained by using the following code:NSString *uuid = [[Nsuuid uuid] uuidstring]You can also save the new Vindor identifier (Idfv-identifierforvendor

. Then pull the interface down and click "Continue" at the bottom of the interface to create it. 7This step, we continue to click on "Continue". This step is to say, need the computer keychain configuration file, I will tell you later, so we first click "Continue" to enter the next step. 8This step requires us to upload the keychain configuration file.OK, we now open our launchpad, find "

(empno, '20140901', ename, NULL) "7900 ",MAX (decode (empno, '20140901', ename, NULL) "7499 ",MAX (decode (empno, '20140901', ename, NULL) "7654"FROM empWHERE mgr IN (7566,769 8)AND deptno IN (20, 30)Group by mgr, deptnoOrder by 1, 2; Here, the transposed column is empno, and the fixed column is mgr and deptno. Another way to convert rows to columns is to change the row values in the same group to a single column value, but the transposed row values are not changed to column names: ID CN_1 CV_1

the system upgrade, unloading load, backup recovery can be preserved, and now I have not found that can use the strict sense of the unique identity. The next thing I want to talk to you about is how to get the "only sign" that doesn't change easily by "legal" means.What do mobile statistics platforms use to identify devices?This paper studies the SDK of two major mobile statistics platforms in China and TalkingData.Friends of the league with a Openudid +IDFATalkingData with a

PrefaceFor a few years iOS app coder, for the certificate generation, the use of the process of heart, but the principle of this mechanism has been not very understanding. Recently, due to the work needs to be carefully studied, the special study of their own experience in this, for everyone to learn correct.problemThe typical iOS app's signature process is this (just write about it, there's a lot of the process online): To access the keychain