/*1. Add the Address Book class (name, phone) to the archive and archive method, that is, add the method that stores the information to the disk. */#import #import "ConTact.h"#define PATH @ "/users/qianfeng/desktop/hehe/2.plist"int main (int argc, const char * argv[]) {@autoreleasepool {Contact *contact = [[Contact alloc] init];Contact.name = @ "Xiaowang";Contact.tel = @ "135";Creating a mutable binary file
Tags: using AR data art on log database SQL asChange Oracle from archive mode to non-archive modeStart –> Run command cmd into command line mode1. Use the command Sqlplus to open the following form without logging:Sqlplus/nolog;2. Connect to the database Dev.world where Dev is the Oracle SID is as follows:Sql> Conn System/manager @dev. World as Sysdba3. Close the database as follows:sql> shutdown Immediate4
Label:1. See if Oralce is an archive or non-archive mode Sql> select Name,log_mode from V$database; NAME Log_mode---------------------------------------- ------------------------------------YOON ARCHIVELOG Sql> select Name,log_mode from V$database; NAME Log_mode---------------------------------------- ------------------------------------YOON ARCHIVELOG sql> archive
First, the archive mode:The Oracle database has an online redo log, which records changes made to the database, such as inserting, deleting, updating data, etc., which are recorded in the online redo log. A generic database must have at least 2 online redo log groups. When an online redo log group is written full, a log switch occurs, the online redo log Group 2 becomes the currently used log, when the online redo log Group 2 is full, the log switch,
Introduction to oracle archive and non-archive Modes
Oracle archive mode and non-archive Mode settings
The log archiving mode of Oracle can effectively prevent instance and disk faults and is indispensable for database fault recovery. Because the initial installation mode of oracle is not the
Archive and archive custom object typesArchive and archive custom objects
To archive and unarchive a custom class, you must follow the following protocol: NSCoding.
Student. h file
#import
Student. m file
# Import "Student. h "@ implementation Student-(instancetype) initWithName :( NSString *) name AndAge :( int) age
after removalCp-i Test.txt test1.txt If the destination file already exists, you will be asked to overwrite the target file before overwriting it! CommonCp-l Test.txt Test1.txt A hard-connect connection file is established without copying the file itselfCp-p Test.txt Test1.txt is copied in conjunction with the properties of the archive and is often used as a backup!Cp-r recursive replication, the replication behavior in the directory! Common(2) Delet
With runtime, no matter how many attributes the model has, it can be done with a few lines of code.Assume that the person class has more than N attributes, but (write 3 of them here). h#import @interface person:nsobject > @property (nonatomic, assign) int age ; @property (nonatomic, assign) int height; @property (nonatomic, copy) nsstring *name; @end. m#import "Person.h"#import #import @implementation Mjperson-(void) Encodewithcoder: (nscoder *) Encoder {unsigned int count = 0; Ivar *iva
Application Sandbox:Each iOS app has its own app sandbox (the app sandbox is the file system directory) that is isolated from other file systems. The app must stay in its own sandbox, and other apps won't be able to access it.The root path of the emulator app sandbox is: (Apple is the user name, 6.0 is the emulator version)/users/apple/library/application Support/iphone simulator/6.0/applicationsOr: /users/user name/repository/application support/iphone simulator/6.1/applications Attention:By de
iOS Learning (OC language) Knowledge Point finishingI. Archiving and unpacking operations1) Archiving is a process that stores one or more objects so that they can be restored later, including storing the object in a file and then reading it laterArchive data objects into a plist file2) plist files can only be stored in: NSString, NSDate, NSNumber, Bool, NSData, Nsarray, nsdictionaryand Nsarray and nsdictionary can only be the above types3) What type of data is archived and what type of data is
When the project references an external class library or contains a child Lib project, the default generated Archive is Generic Xcode Archive format cannot publish and generate an IPA file.This time you need to change the project settings in build setting, change the tag bit of skip install to Yes. Note that all external third-party static library engineering settings are modified.Or you won't succeed.A sum
Project management archive and Project Management Archive
Archive project management methods-Mind Map, prototype tools, interface testing, design mode, Version Management, unit testing, continuous integration, code review, Bug Tracking
Beautiful Life of the sun and fire god (http://blog.csdn.net/opengl_es)
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The way to archive is to store data in ciphertext, or in binary storage. Archived properties and methods: Nskeyedarchiverfoundation_export NSString * Const nsinvalidarchiveoperationexception; Foundation_export NSString * Const nsinvalidunarchiveoperationexception; The above two constants are used to handle exceptions, and one is used when archiving an archive. Sfoundation_export NSString * Const Nskeyedarch
Inconsistent backup: Because the backup operation cannot be completed instantaneously, and the data files are written all the time, the SCN is changing, when the nth data file is backed up,The SCN for the n+1 data file may have been different from the previous one.Inconsistent backups must be repaired to a consistent state before they can be opened with archived log files and online redo logs after recovery. Therefore, the creation ofBuild inconsistent backups In addition to the data files and c
Switch between the archive mode and non-archive mode in Oracle. 1. Check whether oracle is in archive mode in arichiveloglist.
Switch the Oracle archive mode to non-archive Mode 1. Check whether oracle is in archive mode arichive
Automatic Coding of multi-level classified archive ID numbers in the basic archive management module of ERP (V1.0)
This Stored Procedure implements the automatic encoding technology for multi-level classified file ID numbers. This version (V1.0) now only implements three-bit encoding at each level,
This version has the following features:Different codes can be generated based on different database ta
Label:Oracle never archives logs to archive log: sql> shutdown immediate; The database is closed. The database has been uninstalled. The Oracle routine has been closed. sql> startup Mount; The Oracle routine has been started. The database is loaded. sql> ALTER DATABASE Archivelog; The database has changed. sql> ALTER DATABASE open; The database has changed. Create an archive path (Oracle installation user r
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