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Showing episodes 121 - 144 of 491 in total
  • #371

    Server-side Swift with Vapor

    When you have a many-to-many relationship you typically rely on a join table, or what Vapor calls a Pivot table to relate the records together. In this episode we will create a relationship to allow an issue to have many tags, and also allow a tag to apply to many issues. We'll see how we can use Vapor's ModifiablePivot and Sibling types to make working with these relationships easier.

  • #370

    We continue our mini-project to create a Swift script that automatically creates migrations for Vapor projects. In this episode we save the generated templates to disk, render a generated extension so that we can add these migration types to the Vapor service, and see the example running end-to-end.

  • #369

    Server-side Swift with Vapor

    Our Project and Issue models currently aren't connected in any way. In this episode we will add a foreign key to the projects table and add the parent/child relationships the models so that we can query for issues belonging to a project.

  • #368

    Usually I lean on Ruby or Bash for writing command line scripts, but it is becoming increasingly more viable to use Swift for this as well. In the Vapor series, I wanted to write a little script (in Swift) that would generate migration files for me so I wouldn’t have to maintain this myself. For this, I used the Marathon tool, which helps alleviate some of the machinery necessary to use Swift in this way. And what better way to explore this tool than with this author guiding me along. John Sundell joins me in this episode to use Marathon and Swift to write a useful script for Vapor applications. This is a longer episode, so it is split into two parts. Enjoy!

  • #367

    Working with dates is a task that is universally applicable to Swift developers. Particularly when dealing with an API, dates can arrive in all shapes and sizes. We‘ll examine some of the common ones such as ISO 8601, show how to parse these formats into Date instances, and how to use DateFormatter to display them back again as a string. We‘ll also cover the importance of using en_US_POSIX and honoring the user‘s Locale when displaying dates.

  • #366

    Sometimes when using a functional style to iterate and transform data we can inadvertently make the performance and memory usage much worse. In this episode we will see how we can take a standard procedural iteration, convert it to a functional style, and then utilize lazy to avoid some of the pitfalls that we sometimes run into.

  • #365

    Server-side Swift with Vapor

    In the last 2 episodes we added some behavior to add automatically managed timestamp fields and some fairly complex logic to set up UUID primary keys the way we want. Now if we want to share those, or make them the default for our models, we currently have to copy & paste. In this episode we will refactor this logic into reusable protocols so that our work can be applied on any model we wish easily.

  • #364

    Server-side Swift with Vapor

    If you want to track when records are created and modified, you can add some fields to your model and Fluent will automatically manage them for you. You just have to take care to define your TimestampKey properties carefully so they match what Fluent expects.

  • #363

    Server-side Swift with Vapor

    In this episode we look at customizing the table and columns that Fluent creates for us. In addition to customizing our column data types, we'll also have to lean on an extension of Postgres to generate UUID values for us. We'll see how to customize some of the column constraints to suit our needs, and then create a development route to test it all out.

  • #362

    Server-side Swift with Vapor

    In this episode we set up a new Vapor application to use Postgresql as the database. We'll see how to configure FluentPostgreSQL, how to create and set up a connection to the database, and look at the defaults for PostgresSQLModel. We'll also discuss the pros and cons of using UUID primary keys over auto-incrementing integers.

  • #361

    We continue building out our little promise library, this time adding an ensure method, refactoring how we call the callback blocks, and fix a race condition issue by triggering callbacks even if the value has already been provided.

  • #360

    Promises are a useful way of turning async code and writing it as if it were synchronous. In this episode we'll create a promise library from scratch so we can see how they work under the hood.

  • #359

    Server-side Swift with Vapor

    In this episode we take a deeper look at one of the fundamental building blocks that support Vapor's asynchronous programming model: Futures. Understanding Futures is really important to understand when writing Vapor applications.

  • #358

    Server-side Swift with Vapor

    Now that we have Fluent set up, let’s see how we can use it to add, update, and delete records to the database. We’ll get a taste for how futures work in Vapor, and we will also see some of the builtin features that Vapor has to make loading records from your routes really simple.

  • #357

    Server-side Swift with Vapor

    Most server applications will need to store some data in a database. For Vapor applications, this is done with Fluent, a Swift Object-Relational-Mapper for persisting objects to a database. Fluent supports SQLite, Postgres, and Mysql. In this episode we will learn how to set up Fluent with a SQLite database for development. We'll create our first model object, and discuss how Fluent supports migrations for evolving the database schema over time.

  • #356

    In this episode we configure our iOS app to receive push notifications, adding the OneSignal SDK to our project, configuring the Notification Service extension, and testing it out on a real device.

  • #355

    In this episode we look at how to generate a certification for adding push notification support for your app, using OneSignal as our push notification provider

  • #354

    Server-side Swift with Vapor

    Let's take what we have learned and build a simple web app. We'll leverage NSLinguisticTagger on the server and built a small UI that extracts names from provided text. We'll lean on everything we have used so far in this series: routes, templates, master templates, context data, and a little CSS to make the UI look nice.

  • #353

    With special guest Yono, we dive into the system for text-to-speech and speech recognition on iOS. Yono builds an app for language practice. Along the way we become familiar with AVAudioEngine, AVSpeechSynthesizer, and SFSpeechRecognizer from the Speech Framework.

  • #352

    Server-side Swift with Vapor

    When working with web pages, you will almost certainly want to share a considerable amount of HTML. By nesting templates inside of master templates, we can share common HTML structure, layout, and share styles and scripts. We will see how to define sections that can be customized inside of your templates, as well as how to extract common components into partials that you can embed inside of other templates.

  • #351

    Server-side Swift with Vapor

    Leaf is Vapor's component for rendering dynamic templates. Rather than writing HTML strings by hand in our router, we can write leaf templates that allow us to mix HTML with code. Since Leaf is a separate package, we will show how to integrate this into your project from scratch, to get an overview of how dependencies are assembled in a Vapor project.

  • #350

    Server-side Swift with Vapor

    Vapor uses a router to determine how to process incoming requests. In this episode, we will see how to define routes and how to return simple responses. We will see how to return custom JSON responses, how to accept JSON posts, and how to deal with requests with dynamic parameters.

  • #349

    Server-side Swift with Vapor

    In this episode we'll learn how to install the vapor tools, how to create new projects, and look at how projects are structured.

  • #348

    Unified Logging and Activity Tracing

    Signposts are a special part of the Unified Logging and Activity Tracing system. They allow you to mark point-in-time events that occur in your code, or track the duration of operations by specifying the begin and end for an activity. These can be visualized in Instruments to get a rich, high level view of how these operations are performing, how often they are occurring, and how long they are taking. In this episode we will see how to add signposts to an app and how to view these signposts in Instruments.