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Guilherme Rambo

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Guilherme Rambo is a Mac and iOS developer based in Brazil. Known for discovering Apple’s secrets and analyzing leaks, he writes about his discoveries on 9to5mac.

If you have any tips or suggestions, contact him at guilherme@9to5mac.com

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Stacktrace Podcast 013: “Underwater Apple Museum”

John and Gui speculate what Apple might have in store for the fall – including the rumored new MacBook and Mac Mini – talk about updating apps to the latest version of iOS, discuss the state of third party Twitter apps and answer questions about prototyping and system-level widgets.

Stacktrace by 9to5Mac is available on iTunes and Apple’s Podcasts app or through our dedicated RSS feed for Overcast and other podcast players.


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Stacktrace Podcast 012: “Kicking the clock down the road”, with special guest Casey Liss

Casey Liss joins John and Gui as the very first special guest on the show – to talk about going indie, CarPlay, and to analyze all of the new spelunking findings from the fifth beta of iOS 12.

Stacktrace by 9to5Mac is available on iTunes and Apple’s Podcasts app or through our dedicated RSS feed for Overcast and other podcast players.


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iOS 12 beta 5 confirms HomePod will add support for making phone calls

Currently, if you want to use HomePod to make a phone call you have to either dial or answer a call on your iPhone, then select your HomePod as the audio output device for the call, you can’t initiate or answer a call using HomePod.

Apple didn’t announce any new features for HomePod during its WWDC keynote this year, but the audio accessory is likely to gain some new features when iOS 12 is released to everyone in September.


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iOS 12 beta 5 includes new shots of AirPods wireless charging case for AirPower ahead of release

We first saw Apple’s revised wireless charging AirPods case last year, when the GM build of iOS 11 leaked, revealing details about new and upcoming devices. The new charging case has a status LED on the exterior, letting users know the charging status without opening the case, a feature that’s essential when charging your AirPods using the currently unreleased AirPower wireless charging mat.


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Stacktrace Podcast 011: “What’s a computer?”

John and Gui talk about Apple’s recent updates to the MacBook Pro and the aftermath of their release, and use that as a starting point for a discussion about the future of the Mac and what really makes a computer a computer.

Stacktrace by 9to5Mac is available on iTunes and Apple’s Podcasts app or through our dedicated RSS feed for Overcast and other podcast players.


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Stacktrace Podcast 010: “Parallel universe Rambo”

John and Gui celebrate the 10 year anniversary of the App Store by talking about how app development and design has changed during the last decade, followed by an in-depth look at the new Shortcuts app and an introduction to Sharecuts.

Stacktrace by 9to5Mac is available on iTunes and Apple’s Podcasts app or through our dedicated RSS feed for Overcast and other podcast players.


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Stacktrace Podcast 009: “Non-pro laptop”

John and Gui dive into the latest news about AirPower, with some brand new details about iOS as an embedded platform. Apple’s recent keyboard repair policy then prompts a discussion about what makes a pro machine and what the perfect developer laptop could look like.

Stacktrace by 9to5Mac is available on iTunes and Apple’s Podcasts app or through our dedicated RSS feed for Overcast and other podcast players.


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Marzipan in Mojave: Porting developer iOS apps to macOS

With macOS Mojave, Apple introduced four apps that were previously only available on iOS: Stocks, News, Home and Voice Memos. During the presentation, speculation began on how these could be the iOS apps themselves, ported to the Mac with the rumored Marzipan project. At the end of the Keynote, Craig Federighi presented a sneak peek at a multi-phase project they’ve been working on. Without giving it any name, Craig explained that this project allows iOS apps to be ported to the Mac with minimal effort,that Apple used this for their News, Stocks and Voice Memos apps and that it would become available to third-party developers next year. I decided to explore this project and see just how minimal an effort it would be to port an existing, real-world iOS app to the Mac.


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Stacktrace Podcast 008: “I can has debugger”

After settling the scores from last episode’s poker game, John and Gui dives into the announcements and news from WWDC 2018. What does the new Shortcuts system mean for Siri, how useful is Augmented Reality really, what’s it like building a Mac app using UIKit and Marzipan, and much more.

Stacktrace by 9to5Mac is available on iTunes and Apple’s Podcasts app or through our dedicated RSS feed for Overcast and other podcast players.


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Stacktrace Podcast 007: “WWDC Poker”

On this special pre-WWDC episode of the show, John and Gui play a special variant of Poker to share their predictions, speculations and hopes for what Apple might release at WWDC 2018.

Stacktrace by 9to5Mac is available on iTunes and Apple’s Podcasts app or through our dedicated RSS feed for Overcast and other podcast players.


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Unofficial WWDC app for macOS gets major update with iCloud sync, related sessions, more

Following the update of Apple’s official WWDC app for iOS, the unofficial app for macOS has been updated to version 6. WWDC for macOS allows both attendees and non-attendees to Apple’s Worldwide Developer Conference, which starts next week in San Jose, to access live-streams, videos, and session information during the conference and as a year-round developer resource.

Another very useful feature of the app is the ability to stream live videos and recorded sessions to Chromecast devices.


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Apple’s WWDC app for iOS updated ahead of next week’s event, includes new stickers

Apple’s annual World Wide Developers Conference (WWDC) will be held next week (June 4–8) in San Jose. WWDC is the biggest event of the year for Apple, where they announce major new OS releases for all platforms. In preparation for the event, Apple has just released a new update for its official iOS app.


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Apple’s Star project could be an ARM-based touchscreen hybrid with LTE [U]

UPDATE (5/29): Other publications are now independently reporting the same

UPDATE (5/26): As we speculated, there are different possibilities for this device. Bloomberg’s Mark Gurman reports it is a low-cost iPhone that looks like an iPhone X:

What’s a computer?

In 1981, Xerox released a workstation called “Xerox Star.” It was the first commercial device to be what we consider a computer these days, with a bitmapped display, a graphical user interface, a mouse, and access to e-mail. More than 30 years later, Apple is now working on a new device, codenamed Star. With an interesting model name N84, it could be the first Mac with an ARM processor, or the first iOS notebook…or something completely different.

Macs have been using Intel processors since 2006 and Apple mobile devices have been using Apple-designed processors since 2010. It was recently reported that Apple was going to move Macs to their own processors by 2020.


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Stacktrace Podcast 006: “S**t will happen department”

John and Gui talk about Google’s and Microsoft’s recent announcements at their developer conferences, and how they might affect Apple. They also discuss the viability of 3rd party Twitter clients, whether Apple is behind in terms of AI, and if a developer’s cut of an App Store sale will ever be increased.

Stacktrace by 9to5Mac is available on iTunes and Apple’s Podcasts app or through our dedicated RSS feed for Overcast and other podcast players.


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Stacktrace Podcast 005: “Space Gray Mode”

John and Gui dive deep into the possibilities of a WebKit & macOS system-wide dark theme and discuss all the new rumors about a declarative cross-platform UI framework for Apple’s platforms.

Stacktrace by 9to5Mac is available on iTunes and Apple’s Podcasts app or through our dedicated RSS feed for Overcast and other podcast players.


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WebKit code references suggest dark mode coming to macOS 10.14

Earlier today, we reported on WebKit’s mailing list suggesting that iOS 12 will support iPhone 5s. Following that, I decided to look into WebKit’s source code to see what else could be found about future Apple releases. For those who don’t know, WebKit is the engine behind Safari on both macOS and iOS, it’s developed in the open so it’s natural that it will eventually hint at future iOS and macOS features.


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Apple’s cloud database FoundationDB now open source

Apple has just released a new open source project on Github. FoundationDB is described as “a distributed database designed to handle large volumes of structured data across clusters of commodity servers”. The database system is focused on performance, scalability and fault-tolerance. Meaning projects that use the database for their backend are faster and less expensive to maintain.


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