Andrew Bancroft is an experienced iOS developer and educator with over 15 years of experience. He shares tutorials, courses, and insights on Swift, SwiftUI, Core Data, and app development best practices.
203 articles from this blog
Fix for Swift 4 compiler error when using unavailable colorLiteralRed initializer, replacing with UIColor(red:green:blue:alpha:).
Guide to finding the SQL Server 2017 Reporting Services license key by re-running the main installer.
Explains six types of data analysis: descriptive, exploratory, inferential, predictive, causal, and mechanistic, with a decision flow.
SQL script to search text within database object definitions like functions, procedures, triggers, and views.
Guide to exiting SINGLE_USER mode in SQL Server by killing connections and switching to MULTI_USER.
Explains the concept of a dimensional model in data, breaking down 'model' and 'dimension' to show how data is represented for analysis.
A guide to 10 high-level stages for successful machine learning projects, from defining business metrics to data transformation.
Learn how to identify predictive analytics questions using patterns and keywords like 'which', 'will', and 'likely'.
Explains what data is using a simple bug-hunting analogy, making it easy for beginners to understand.
A comprehensive guide to local receipt validation for iOS using Swift, covering the entire process from preparation to implementation.
Guide to finalizing receipt validation in Swift by computing and comparing GUID hash using OpenSSL.
A guide to parsing and decoding Apple receipts in Swift, extracting metadata for validation.
Guide to verifying receipt signatures in Swift using PKCS #7 containers and Apple's root certificate.
Guide on configuring NSPersistentContainer to use an existing SQLite store in Core Data, with code examples.
A conceptual exploration of why Swift closures are named 'closures', explaining variable capturing with a swimming pool analogy.
A tutorial on implementing the Core Data stack in Swift using NSPersistentContainer for iOS 10+.
Explains why Swift requires @escaping annotation for escaping closures, with insights from compiler design and developer benefits.
Explains what an escaping closure is in Swift, with definitions and scenarios like storing closures as state or async callbacks.
Explores how every developer is an API designer, emphasizing mindful design of functions, types, and interfaces for better code usability.
Explains why Core Data model attribute types must match NSManagedObject property types, especially optionals, to avoid runtime crashes.
