2014/10/15 下午 10:12:53

iphone Programming Glossary: primarykey

Primary Key behaviour in Core Data iPhone

http://stackoverflow.com/questions/1710526/primary-key-behaviour-in-core-data-iphone

two ways of doing this. It seems to me that the latter your proposed method is the better solution. I changed id to primaryKey since I don't think it would be a good idea to use id as a variable or method name in Object C since it's a keyword. I might.. id as a variable or method name in Object C since it's a keyword. I might work I've never really tried. Also I assumed primaryKey to be an NSNumber since that is how would be stored in Core Data. Method One would execute a fetch request on the context.. entityForName @ Story inManagedObjectContext context request setPredicate NSPredicate predicateWithFormat @ primaryKey d primaryKey NSUInteger count context countForFetchRequest request error nil request release if count 0 continue Insert..

For loop and if statement

http://stackoverflow.com/questions/5605458/for-loop-and-if-statement

iPhone SQLITE Select statement with variables

http://stackoverflow.com/questions/6699265/iphone-sqlite-select-statement-with-variables

if sqlite3_prepare_v2 database sql 1 selectstmt NULL SQLITE_OK while sqlite3_step selectstmt SQLITE_ROW NSInteger primaryKey sqlite3_column_int selectstmt 0 Animal animal Animal alloc initWithPrimaryKey primaryKey animal.name NSString stringWithUTF8String.. SQLITE_ROW NSInteger primaryKey sqlite3_column_int selectstmt 0 Animal animal Animal alloc initWithPrimaryKey primaryKey animal.name NSString stringWithUTF8String char sqlite3_column_text selectstmt 3 animal.description NSString stringWithUTF8String..

How to implement Primary Key and Foreign Key Table Data in Class Structure in Iphone Application

http://stackoverflow.com/questions/7213732/how-to-implement-primary-key-and-foreign-key-table-data-in-class-structure-in-ip

if sqlite3_prepare_v2 database sql 1 selectstmt NULL SQLITE_OK while sqlite3_step selectstmt SQLITE_ROW NSInteger primaryKey sqlite3_column_int selectstmt 0 ToDo toDoObj ToDo alloc initWithPrimaryKey primaryKey toDoObj.taskName NSString stringWithUTF8String.. selectstmt SQLITE_ROW NSInteger primaryKey sqlite3_column_int selectstmt 0 ToDo toDoObj ToDo alloc initWithPrimaryKey primaryKey toDoObj.taskName NSString stringWithUTF8String char sqlite3_column_text selectstmt 1 toDoObj.startDate NSString stringWithUTF8String..