Apple on ARI Systems

Swift - Core Location

Mon, 08 May 2023 00:00:00 +0000

References

Tracking Highly Accurate Location in iOS

Tracking Location in Background

To make your app keep getting location information in the background, first add location to UIBackgroundModes key in the info.plist file.

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`1`	`locationManager.allowsBackgroundLocationUpdates = true`

Battery Consumption vs Background mode

pausesLocationUpdatesAutomatically will enable iOS to detect the situation where an app doesn’t need location update.

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`1`	`locationManager.pausesLocationUpdatesAutomatically = true`

The behavior of auto pausing location update is controlled by the flag named activityType in LocationManager class.

Swift

Fri, 25 Mar 2022 00:00:00 +0000

References

Decimals

When you create a floating-point number, Swift considers it to be a Double. That’s short for “double-precision floating-point number”.
Swift considers decimals to be a wholly different type of data to integers, which means you can’t mix them together. After all, integers are always 100% accurate, whereas decimals are not, so Swift won’t let you put the two of them together unless you specifically ask for it to happen.
Swift decides whether you wanted to create a Double or an Int based on the number you provide

Older APIs use CGFloat. If you see CGFloat you can just ignore it and use Double.

Mac OS X

Thu, 15 Mar 2018 12:56:00 +0000

Upgrade

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#Install all updates
softwareupdate -i -a
#Install the specific update
softwareupdate -i NAME
#List installers
softwareupdate --list-full-installers
#Download the specific installer
softwareupdate --fetch-full-installer --full-installer-version 14.7
#Run the specific installer
sudo /Applications/Install\ macOS\ <version>.app/Contents/Resources/startosinstall

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