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Why your TestFlight build doesn't show up after a successful upload

You push, the build runs, the archive and export steps succeed, the upload step succeeds, the workflow finishes green. You open App Store Connect to check on it and TestFlight shows...

• Build number must change with each upload, even if marketing version stays same
• Use github.runnumber in GitHub Actions for dynamic build number
• Verify dynamic build number substitution in archive step

1h ago ·dev.to

Fix "No signing certificate matching team ID" in GitHub Actions

If you're building an iOS app in GitHub Actions (or any headless CI, really) and your archive/export step fails with something like No signing certificate "iOS Distribution" matching team ID…

1h ago ·dev.to

React useLatest Hook: Read Fresh State in Async Callbacks (2026)

Here's an autosave button that lies to the user: function Editor ({ docId }: { docId : string }) { const [ text , setText ] = useState ( "" ); const [ status , setStatus ] = useState < " idle " | "…

• React useLatest hook reads fresh state in async callbacks
• Prevents stale closures causing outdated data issues
• Works with setTimeout, setInterval, event listeners

1h ago ·dev.to

GitHub Actions' free macOS minutes, explained

GitHub Actions is GitHub's built-in CI/CD system — it spins up a fresh virtual machine, runs whatever commands you tell it to, and tears the machine down when it's done.

• GitHub Actions offers free macOS minutes for CI/CD.
• Private repositories get 200 free macOS-runner-minutes/month on free plan.
• Apple Developer Program fee is separate from GitHub billing.

1h ago ·dev.to

The actual cost of shipping an iOS app in 2026

"How much does it cost to put an app on the App Store" gets answered inconsistently online because most answers either only count Apple's fee, or only count hardware, or quietly assume you're renting…

• Mandatory $99/year fee for Apple Developer Program membership
• Building and signing requires Mac, cloud Mac, or GitHub Actions
• Public repository with GitHub Actions is most cost-effective at $99/year

1h ago ·dev.to

Why 'WHERE x = NULL' Never Works in SQL (And What to Use Instead)

Adapted from the SQL Essentials Companion Guide . You write a query to find every customer with no phone number on file. WHERE phone = NULL looks obviously correct — and it returns zero rows, even…

1h ago ·dev.to