Swift项目模仿鲨鱼记账项目代码.zip

 <p align="center"><strong>A toolkit for SQLite databases, with a focus on application development</strong></p> <p align="center"> <a href="https://developer.apple.com/swift/"><img alt="Swift 5.2" src="https://img.shields.io/badge/swift-5.2-orange.svg?style=flat"></a> <a href="https://developer.apple.com/swift/"><img alt="Platforms" src="https://img.shields.io/cocoapods/p/GRDB.swift.svg"></a> <a href="https://github.com/groue/GRDB.swift/blob/master/LICENSE"><img alt="License" src="https://img.shields.io/github/license/groue/GRDB.swift.svg?maxAge=2592000"></a> <a href="https://travis-ci.org/groue/GRDB.swift"><img alt="Build Status" src="https://travis-ci.org/groue/GRDB.swift.svg?branch=master"></a> </p> --- **Latest release**: April 11, 2021 • version 5.7.4 • [CHANGELOG](CHANGELOG.md) • [Migrating From GRDB 4 to GRDB 5](Documentation/GRDB5MigrationGuide.md) **Requirements**: iOS 10.0+ / macOS 10.10+ / tvOS 9.0+ / watchOS 2.0+ &bull; SQLite 3.8.5+ &bull; Swift 5.2+ / Xcode 11.4+ | Swift version | GRDB version | | -------------- | ----------------------------------------------------------- | | **Swift 5.2+** | **v5.7.4** | | Swift 5.1 | [v4.14.0](https://github.com/groue/GRDB.swift/tree/v4.14.0) | | Swift 5 | [v4.14.0](https://github.com/groue/GRDB.swift/tree/v4.14.0) | | Swift 4.2 | [v4.14.0](https://github.com/groue/GRDB.swift/tree/v4.14.0) | | Swift 4.1 | [v3.7.0](https://github.com/groue/GRDB.swift/tree/v3.7.0) | | Swift 4 | [v2.10.0](https://github.com/groue/GRDB.swift/tree/v2.10.0) | | Swift 3.2 | [v1.3.0](https://github.com/groue/GRDB.swift/tree/v1.3.0) | | Swift 3.1 | [v1.3.0](https://github.com/groue/GRDB.swift/tree/v1.3.0) | | Swift 3 | [v1.0](https://github.com/groue/GRDB.swift/tree/v1.0) | | Swift 2.3 | [v0.81.2](https://github.com/groue/GRDB.swift/tree/v0.81.2) | | Swift 2.2 | [v0.80.2](https://github.com/groue/GRDB.swift/tree/v0.80.2) | **Contact**: - Release announcements and usage tips: follow [@groue](http://twitter.com/groue) on Twitter. - Report bugs in a [Github issue](https://github.com/groue/GRDB.swift/issues/new). Make sure you check the [existing issues](https://github.com/groue/GRDB.swift/issues?q=is%3Aopen) first. - A question? Looking for advice? Do you wonder how to contribute? Fancy a chat? Go to the [GRDB forums](https://forums.swift.org/c/related-projects/grdb), or open a [Github issue](https://github.com/groue/GRDB.swift/issues/new). ## What is this? GRDB provides raw access to SQL and advanced SQLite features, because one sometimes enjoys a sharp tool. It has robust concurrency primitives, so that multi-threaded applications can efficiently use their databases. It grants your application models with persistence and fetching methods, so that you don't have to deal with SQL and raw database rows when you don't want to. Compared to [SQLite.swift](http://github.com/stephencelis/SQLite.swift) or [FMDB](http://github.com/ccgus/fmdb), GRDB can spare you a lot of glue code. Compared to [Core Data](https://developer.apple.com/library/content/documentation/Cocoa/Conceptual/CoreData/) or [Realm](http://realm.io), it can simplify your multi-threaded applications. It comes with [up-to-date documentation](#documentation), [general guides](#general-guides--good-practices), and it is [fast](https://github.com/groue/GRDB.swift/wiki/Performance). See [Why Adopt GRDB?](Documentation/WhyAdoptGRDB.md) if you are looking for your favorite database library. --- <p align="center"> <a href="#features">Features</a> &bull; <a href="#usage">Usage</a> &bull; <a href="#installation">Installation</a> &bull; <a href="#documentation">Documentation</a> &bull; <a href="#faq">FAQ</a> </p> --- ## Features GRDB ships with: - [Access to raw SQL and SQLite](#sqlite-api) - [Records](#records): Fetching and persistence methods for your custom structs and class hierarchies. - [Query Interface](#the-query-interface): A swift way to avoid the SQL language. - [Associations]: Relations and joins between record types. - [WAL Mode Support](#database-pools): Extra performance for multi-threaded applications. - [Migrations]: Transform your database as your application evolves. - [Database Observation]: Observe database changes and transactions. - [Combine Support]: Access and observe the database with Combine publishers. - [RxSwift Support](http://github.com/RxSwiftCommunity/RxGRDB): Access and observe the database with RxSwift observables. - [Full-Text Search] - [Encryption](#encryption) - [Support for Custom SQLite Builds](Documentation/CustomSQLiteBuilds.md) ## Usage <details open> <summary>Start using the database in four easy steps</summary> ```swift import GRDB // 1. Open a database connection let dbQueue = try DatabaseQueue(path: "/path/to/database.sqlite") // 2. Define the database schema try dbQueue.write { db in try db.create(table: "player") { t in t.autoIncrementedPrimaryKey("id") t.column("name", .text).notNull() t.column("score", .integer).notNull() } } // 3. Define a record type struct Player: Codable, FetchableRecord, PersistableRecord { var id: Int64 var name: String var score: Int } // 4. Access the database try dbQueue.write { db in try Player(id: 1, name: "Arthur", score: 100).insert(db) try Player(id: 2, name: "Barbara", score: 1000).insert(db) } let players: [Player] = try dbQueue.read { db in try Player.fetchAll(db) } ``` </details> <details> <summary>Activate the WAL mode</summary> ```swift import GRDB // Simple database connection let dbQueue = try DatabaseQueue(path: "/path/to/database.sqlite") // Enhanced multithreading based on SQLite's WAL mode let dbPool = try DatabasePool(path: "/path/to/database.sqlite") ``` See [Database Connections](#database-connections) </details> <details> <summary>Access to raw SQL</summary> ```swift try dbQueue.write { db in try db.execute(sql: """ CREATE TABLE place ( id INTEGER PRIMARY KEY AUTOINCREMENT, title TEXT NOT NULL, favorite BOOLEAN NOT NULL DEFAULT 0, latitude DOUBLE NOT NULL, longitude DOUBLE NOT NULL) """) try db.execute(sql: """ INSERT INTO place (title, favorite, latitude, longitude) VALUES (?, ?, ?, ?) """, arguments: ["Paris", true, 48.85341, 2.3488]) let parisId = db.lastInsertedRowID // Avoid SQL injection with SQL interpolation try db.execute(literal: """ INSERT INTO place (title, favorite, latitude, longitude) VALUES (\("King's Cross"), \(true), \(51.52151), \(-0.12763)) """) } ``` See [Executing Updates](#executing-updates) </details> <details> <summary>Access to raw database rows and values</summary> ```swift try dbQueue.read { db in // Fetch database rows let rows = try Row.fetchCursor(db, sql: "SELECT * FROM place") while let row = try rows.next() { let title: String = row["title"] let isFavorite: Bool = row["favorite"] let coordinate = CLLocationCoordinate2D( latitude: row["latitude"], longitude: row["longitude"]) } // Fetch values let placeCount = try Int.fetchOne(db, sql: "SELECT COUNT(*) FROM place")! // Int let placeTitles = try String.fetchAll(db, sql: "SELECT title FROM place") // [String] } let placeCount = try dbQueue.read { db in try Int.fetchOne(db, sql: "SELECT COUNT(*) FROM place")! } ``` See [Fetch Queries](#fetch-queries) </details> <details> <summary>Database model types aka "records"</summary> ```swift struct Place { var id: Int64? var title: String var isFavor