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Swift Variables


Variables in Swift scripts are declared to be of a specific type. Assignments to those variables must be data of that type. Swift script variables are single-assignment - a value may be assigned to a variable at most once. This assignment can happen at declaration time or later on in execution. When an attempt to read from a variable that has not yet been assigned is made, the code performing the read is suspended until that variable has been written to. This forms the basis for Swift’s ability to parallelise execution - all code will execute in parallel unless there are variables shared between the code that cause sequencing.

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In this page (written and validated by ) you learned about Swift Variables . What's Next? If you are interested in completing Swift tutorial, your next topic will be learning about: Swift Variable Declarations.



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