Nil-Coalescing Operator
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What is Nil-Coalescing Operator?
The nil-coalescing operator ( ?? ) provides a default value when an optional is nil. It's a shorthand way to unwrap an optional if it contains a value, or to provide an alternative value if the optional is nil. This operator simplifies code by avoiding verbose if let or guard let statements when handling optional values.
Free resources to learn Nil-Coalescing Operator
- Official docsNil-Coalescing Operator
- VideoNil coalescing – Swift in Sixty Seconds
More in stage 8: Operators
Nil-Coalescing Operator: common questions
Can I learn Nil-Coalescing Operator in Hindi?
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Is this Nil-Coalescing Operator tutorial for beginners?
It is lesson 16 of 156 in the free Swift & Swift UI roadmap, in stage 8, Operators. If you are new to Swift & Swift UI, start from stage 1 and come back here in order; if you already know the earlier stages, this lesson stands on its own.