Code-free
Code-free

Swift: Storage for extension properties

Let's get in some trouble

Russ Bishop
June 23, 2014

A little birdy told me the Swift team has stored extension properties on their roadmap, but obviously we must await some future build or even revision of the language depending on when their schedule allows for it.

In the mean time, we can use objc_setAssociatedObject and objc_getAssociatedObject to simulate it. Unfortunately this only works . . .

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Swift: Call by name

A blast from the past

Russ Bishop
June 23, 2014

Back when computers came with some assembly required and real men/women booted by toggling switches on the front panel, a language called Algol introduced many programmers to call-by-name parameter passing.

For many of today's languages, parameters to a function call are evaluated in the caller's context then copied to the callee. . . .

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Swift Documentation Comments

Work in Progress

Russ Bishop
June 22, 2014

Update: A bug sometimes prevents Xcode from reading SwiftDocs for files other than the current file in a framework project, so you won't always see the doc comments in Quick Help or when Option-clicking a symbol. Hopefully the bug will be fixed.

Update #2: mattt of NSHipster fame heard from a little birdie that the doc comment format is . . .

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#663399becca

Can't handle it

Russ Bishop
June 12, 2014

I can't write about Rebecca Meyers and what the Meyers family is going through for the same reasons as Jason Kottke:

Sometimes parents tend to get caught up in the minutia of parenthood: the logistics of getting from one place to another without losing your shit, the weary deflection of the 34th "why?" question of the . . .

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Swift Arrays and Dictionaries

Clearing my confusion

Russ Bishop
June 11, 2014

While reading The Swift Programming Language, I came across a couple of sections like Collection Types and Classes and Structures: Assignment and Copy Behavior for Collection Types

The obvious first issue is

Immutability has a slightly different meaning for arrays, however. You are still not allowed to perform any action that has the . . .

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Swift: Generic extensions in libraries currently broken

Just saving you some time

Russ Bishop
June 11, 2014

If you were thinking of creating a Swift framework and writing some unit tests, you should be aware of a bug. You cannot currently extend a built-in or standard library generic type with any properties or methods that require the type's generic parameters.

In other words, create a framework project in Swift and add this to a swift file:

. . .

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Handle Exceptions in Swift

Baby's got a brand new bag

Russ Bishop
June 07, 2014

Unless you've been living under a rock, you're probably aware that Apple has released a new programming language called Swift. It's still a work-in-progress, moving towards 1.0. Designing a language and a standard library to go with it is no small task, so it's not surprising they haven't gotten around to filling in all . . .

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