nspredicate

相关标签：javascript jquery android 多少钱 iPhone

UITableView -> numberOfRowsInSection not working as I thought…

I\'m currently having the following issue in my project: I\'m using Core Data to retrieve data from a SQLite database. I use multiple views to display different portions of the database. I also imple[详细]

2023-03-04 20:50 分类：问答
Crash using Aggregate Operation: "ALL" in a Core Data iOS Application

I\'m working on an iphone application and I have a simple many-to-many relationship set up with Group and Contact objects. A group can have many contacts and contacts can belong to multiple groups.[详细]

2023-03-04 13:56 分类：问答
Objective C: Filtering Core Data Information based on Set of Annotations visible in current MapRect

I have around 1000+ core data objects for my application. The application consist of a mapView and a tableView.[详细]

2023-03-04 08:49 分类：问答
Creating NSPredicate from string

I need to form a predicate from multiple arrays of values. So I thought I can initially form a string with all the values, and then pass that string for usage in a predicate, i.e[详细]

2023-03-03 14:58 分类：问答
Core Data: How to do a second fetch limited to the results of an earlier fetch?

This seems like it may be a trivial question, but I am new to Core Data and to databases. In my application, I perform a fetch and display the results.Then, based on user input, I need to cull those[详细]

2023-03-02 09:14 分类：问答
Checking to see if an NSString contains characters from a different NSString

I am looking for a way to compare two strings and see if the second string contains a character (letter, number, other) listed in the first, let me explain:[详细]

2023-02-28 08:43 分类：问答
Use a set from a managed object as data for a fetched results controller

I want to make a Navigation interface, where a user can tap on a cell and have a new navigation controller the same as the previous one come up. My managed objects have the following structure:[详细]

2023-02-27 04:23 分类：问答
NSPredicate to match "any entry in an NSDatabase with value that contains a string"

I have an array of dictionaries, similar to the following: ( { Black = \"?\"; Date = \"????.??.??\"; Result = \"*\";[详细]

2023-02-22 06:45 分类：问答
How to use the "IN" Operator with a Predicate

How to write NSPredicate to fetch the rows that 开发者_JAVA技巧matches with values in the array? E.g:[详细]

2023-02-22 02:09 分类：问答
Core Data - NSPredicate - Finding properties that equal 0 but are not Null

There\'s no way this question hasn\'t been asked before but I cannot find a clear answer anywhere. I have Co开发者_StackOverflow中文版re Data entities that have optional \'Integer 32\' attributes. I\[详细]

2023-02-21 21:14 分类：问答