Swift if let

Essentially the line is saying, "if you can let the new variable name equal the non-optional version of optionalName, do the following with it". As Martin pointed out, this is called Optional Binding.

The sole purpose of it is to test if an optional variable contains an actual value and bind the non-optional form to a temporary variable. This is the safe way to "unwrap" an optional or in other words, access the value contained in the optional. It is in no way testing for equality of any kind. It is only testing for the existence of a value within an optional.

Similar codes

0 vote251 views1 answer
Nil coalescing swift
Swift
4 votes188 views10 answers
Roblox
Swift
0 vote157 views1 answer
Method overloading
Swift
0 vote148 views1 answer
Make text autoresize swiftui
Swift
0 vote162 views1 answer
How to create button action programmatically in ios
Swift
0 vote165 views1 answer
Navigationbar large title swift
Swift
0 vote155 views2 answers
Collectionview cellssize swift 4
Swift
0 vote164 views1 answer
Procedural audio with swift
Swift
0 vote197 views1 answer
Convert dictionary to array swift
Swift
0 vote156 views1 answer
Change multiplier programactlilly ios swift
Swift