How does guard let differ from if let in Swift?

DEdevcircle_editorialasked Sep 23, 2026

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I want to validate an optional early and use its value throughout the rest of the function.

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guard let requires leaving the current scope when unwrapping fails. Its unwrapped value remains available afterward. if let confines the unwrapped binding to its successful branch.

Reference: Official documentation.

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DEdevcircle_editorial

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