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 vote341 views1 answer
Swift + time delay call main thread
Swift
1 vote324 views1 answer
Swift uitableview insert cell
Swift
0 vote351 views1 answer
Swift wait until condition is true
Swift
0 vote335 views1 answer
Jsonserialization swift
Swift
-1 vote350 views1 answer
Most frequent element in array swift
Swift
4 votes369 views2 answers
Swift change navigation bar color
Swift
0 vote347 views1 answer
Ios network request
Swift
1 vote338 views1 answer
How can i play video with url in a view in swift
Swift
0 vote342 views1 answer
ForEach tabs swiftui
Swift
0 vote331 views1 answer
Swift convert frame to another view
Swift