---
title: "Issue #75: We're Back! Tool Calling, Default Actors & the Clock Is Ticking"
url: https://daily.dev/posts/issue-75-we-re-back-tool-calling-default-actors-the-clock-is-ticking-3brn9ta9b
source_url: https://ioscodereview.com/issues/issue-75-were-back-tool-calling-default-actors-the-clock-is-ticking/
type: article
source: "iOS Code Review"
published: 2026-03-17T06:32:23.563Z
updated: 2026-03-17T06:32:48.776Z
tags: ["ai", "ios", "swift"]
reading_time: 5
upvotes: 0
comments: 0
language: en
---

> ## Documentation Index
> Fetch the complete documentation index at: https://daily.dev/llms.txt
> Use this file to discover all available pages before exploring further.

# Issue #75: We're Back! Tool Calling, Default Actors & the Clock Is Ticking

**[iOS Code Review](https://daily.dev/sources/ioscodereview)** · 5 min read · 0 upvotes · 0 comments

## Summary

iOS Code Review newsletter issue #75 covers several key updates for iOS developers. Apple's Foundation Models framework now supports tool calling, enabling agentic app features where the on-device model can invoke app-defined tools for real-time data. Swift 6.2 introduces Default Actor Isolation to reduce @MainActor annotation boilerplate, transactional state updates via the new Observations async sequence, and exit testing in Swift Testing for verifying fatal termination conditions. Additional highlights include Swift running in the browser via WebAssembly, the Swift System Metrics 1.0 release for process-level profiling, and a reminder that App Store Connect will require the iOS 26 SDK starting April 28, 2026.

## Full article

daily.dev links to this article rather than hosting it. Read it at the original source: <https://ioscodereview.com/issues/issue-75-were-back-tool-calling-default-actors-the-clock-is-ticking/>

## Similar posts on daily.dev

- [Issue 726 – iOS Dev Weekly](https://daily.dev/posts/issue-726-ios-dev-weekly-fdgcmy3zw) · iOS Dev Weekly · 1 upvotes · 0 comments
- [Swift 6.2 Is Here -- Fatbobman's Swift Weekly \#103](https://daily.dev/posts/swift-6-2-is-here----fatbobman-s-swift-weekly-103-72vdvthza) · Fatbobman · 0 upvotes · 0 comments
- [Awesome iOS Weekly - Issue 478, Aug 28, 2025](https://daily.dev/posts/awesome-ios-weekly---issue-478-aug-28-2025-iw1y7mbxf) · Awesome iOS · 1 upvotes · 0 comments

---

Tags: [#ai](https://daily.dev/tags/ai), [#ios](https://daily.dev/tags/ios), [#swift](https://daily.dev/tags/swift)

[View this post on daily.dev](https://daily.dev/posts/issue-75-we-re-back-tool-calling-default-actors-the-clock-is-ticking-3brn9ta9b)