Questions tagged [core-data]
Core Data is Apple's object modeling and persistence framework for OS X and iOS. Xcode provides an object model editor for specifying entities, attributes, and relationships.
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Counting many to one relationship in Core Data
I tried to create simple application, yet I encountered problem with relationship using Core Data in SwiftUI.
I have 2 simple models, ParentEntity:
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Understanding How To Approach A Permutational Word Search
This question is carried over from StackOverflow... First time posting here, so bear with me.
The topic is constructing a search made up of a given string, and a series of letters, where each of the ...
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Core Data Wrapper
I built a wrapper in Swift to practice CoreData.
My question is more general, I hope this is acceptable. I wanted to know whether my implementation of this wrapper is correct or poorly implemented ...
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Quiz app with Practice and Exam modes
I am building a Quiz app in swift (my first app) to practice a few skills (using CoreData, working with plists, UIKit etc.) and later to work with a server which stores the Exercises.
Here's my ...
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Core-data object with relationships conforming protocol in swift
I have a situation where I have to use protocol to be conformed by NSManagedObject which has relationships with other entities.
My protocol is like:
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Private contexts and their parents in CoreData
I find myself following this pattern a lot in my core data code, which works, but I'm wondering if it is needed...
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iOS Core Data Model with Swifty JSON
I have been using SwiftyJSON to create my models of Object in Swift.
But recently, I moved to CoreData for saving the objects locally.
I am new to CoreData and want to know the best practices I should ...
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Passing an NSManagedObjectContext
I've been experimenting with how to pass my managed object context throughout my application in Core Data and I came across an approach that I'd like reviewed.
I've been creating a protocol for all ...
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Weightlifting calculator
I'm building a simple iOS app using Swift that calculates the One Rep Max weight a user can theoretically lift. User inputs a weight lifted, the number of repetitions and the app uses one of several ...
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Table View Controller for selecting and saving user default preferences in an iOS app
This is the Swift code from one of the view controllers in my app that calculates a one rep maximum weight a person can theoretically lift. This particular view controller presents a list in a ...
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Tracking a geolocation
I have created this ViewController using Swift. Its job is to track geolocation and draw a line on a map and save it to core data object. I just want some advice on ...
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Coredata delete all data in an entity
I have this code that I am using to delete all records from an entity. The question is can it be done better or is already the best?
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Changing image of a UIImageView based on a scrollView contentOffset
My task is pretty simple and my code works, it's just that my code feels a bit clumsy to me (and probably will for you too).
I have a view controller (...
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Using NSPredicate with NSFetchRequest in a NSFetchedResultsController
I am learning CoreData and I wanted to have my code reviewed. As usual, I get something to work, then I attempt to refine it.
I have a data model that consists of an Item entity and a subItem entity. ...
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Store CMTimeRange into Core Data
I wanted to store CMTimeRange structures inside managed objects, so I've worked out the following:
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Updating UITableView rows from Core Data
I am fetching or querying all the entries from my database (core-data) at three different times in my code, which I find to be an inefficient approach to writing the code.
The method ...
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Speeding up storage of about 220000 values in Core Data
I use this code on the app's first run to save about 220000 values into core data. The file Navaids.txt has about 200000 and Waypoints.txt has about 20000 lines, where I get data from each line and ...
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Core Data model for test-taking iOS app
I'm building an iOS app for test-taking and I want to be sure of my model before proceeding.
I found this post very helpful and tried to implement a simplified version for Core Data.
Here are some ...
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NSManagedObject in need of smart setters
I'm just beginning my foray into iOS development and need a code review. I have a custom NSManagedObject that needs some smart setters. I'm new to Objective-C, ...
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Core Data model of video and entities
I have a Core Data model with two entities: Video and Playlist.
A Video can be a member of ...
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