Swift BasicsLesson 11Free preview

Swift Operators

This lesson is part of Swift · All levels

Summary

This lesson reviews the operators of arithmetic, comparison, logic, and assignment in Swift. Swift strictly prevents integer overflow by default (unless using a special overflow operator). In addition, Swift provides range operators and zero-coalescing operators.

Key points

The standard arithmetic operator: +, -, *, /, %
Swift does not allow overflow by default for memory security
The Nile-Coalescing operator '??' gives the default value if the Optional is worth zero
The ternary operator 'condition' if true: if false' provides a one-line expression branch

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