Programming in Swift · Closures and Collections | Ray Wenderlich

Hi Hammam!

Fortunately, it’s not necessary to have it all memorized in order to accomplish wonderful things. If you’re either enjoying what you’re learning, or you know it will be helpful to you, I recommend persevering. You should expect the process to be challenging – it certainly was for me! :smiley_cat:

Someone else had a similar question recently. My answer to them is my answer to you, with the addition that you don’t even need to understand everything, let alone have it easily retrievable in your memory, in order to move along. A benefit of the recorded material is that you can come back to it whenever you’d like.

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