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 vote152 views1 answer
Swift 5 to upper
Swift
0 vote160 views1 answer
How to make text selectable swiftui
Swift
0 vote153 views1 answer
How do i have countdown timer in swift stackoverflow
Swift
2 votes225 views1 answer
Settimeout in swift
Swift
0 vote163 views1 answer
How to add dragdown gesture recognizer on view
Swift
0 vote165 views1 answer
Swift navigationbar not working
Swift
0 vote155 views1 answer
Latex tall parentheses
Swift
0 vote175 views1 answer
Add callbacks to view swiftui
Swift
0 vote172 views2 answers
Change the title of a button using Swift
Swift
1 vote165 views1 answer
How to get index path cell collection view from ui longpress gesture swift
Swift