Today I Learned is an open-source project by Hashrocket that exists to catalogue the sharing & accumulation of knowledge as it happens day-to-day. Posts have a 200-word limit, and posting is open to any Rocketeer as well as selected friends of Hashrocket. We hope you enjoy learning along with us.
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With Expo's CLI, the command npx expo run:ios will build and run your application in xcode's IOS simulator. You will need to have Xcode installed in order for the command to work. If you receive an error stating Xcode must be fully installed before you can continue, you may need to navigate to Xcode's settings and set a version of command line tools under the locations tab.

Looking for help? At Hashrocket, our JavaScript experts launch scalable, performant apps on the Web, Android and iOS. Contact us and find out how we can help you.

Today I Learned

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Expo Reactive Native Apps on IOS Simulator