Josh's Swift Journey

So, predictably, it's been tough finding time this week. Knew it would happen with work becoming busier! So a quick-ish entry now. Next bit of Swift Essentials! Start Time - 20:46 4. Application Control Flow I love this! Probably my favourite aspect of Swift. Got enough time to complete this chapter as it's a short-ish one. var hp = 91 var maxHP = 100 // If statement (<, >, <=, >=, !=, ==) if hp < maxHP {     print ( "Health is lower than the max health!" ) } else if hp <= 50 {     print ( "Health is running seriously low!" ) } else {     print ( "Health is not registered" ) } Optional Binding   One interesting point is that the temporary value is only available within the if/let statement, not outside of that scope though! Another example with multiple values. Optional chaining -  if let _ = isShopOpen , let searchedItem = blacksmithShop [ "Shield" ], le...

Yes cracking on! Got a bit of time this morning before heading to my Uncle's and Auntie's. I want to cover Optionals then Control Flow. All very doable! Let's go! Start Time - 08:19 Optionals So I know about these but good to go over! They're used in situations where they may not be a value stored. Nil means the absence of a valid object. You can do these for any type at all. Optional types are returned where there may not have been a value e.g. when converting from string number to actual int number. The question mark syntax. Good way of understanding this is that the ? QUESTIONS whether something may not have a value. So the question bit is key there! You can only use nil with optionals. Optionals can only be var as the values are likely to change. If you create an optional without an initial value then it automatically sets this to nil. Forced unwrapping Comparing the optional against nil.... That's not forced unwrapping - that's just ch...

So a poor effort recently! Life gets in the way...Shouldn't feel too bad though as I did a marathon session six days ago (2 hours worth) so another hour today should still help me to meet my three hours per week target. Just writing that makes me feel so proud - at one point I made a vow to try to get an hour a week. The fact that three hours doesn't seem like that much is something to be very pleased about. Anyway, the next part of Angela's course is all Intermediate Swift. Stuff that I will pay attention to but it should be familiar. It dovetails in with what I've been doing for the past few months, well it should at least. I doubt it'll be as technical as Bob's course! Anyway time to go for it! Start Time - 17:34 Classes Right so command line tool file created. I don't actually remember this AT ALL! So glad I am going over it! This sounds exciting - creating a new class and seeing the purpose for it. Cool.  It doesn't like calling...

Yes, it's time for some consolidation baby! I could just do so for the past few lectures but it makes more sense to go through chapter one in its entirety. If anything does seem really familiar, that's fine - I will obviously spend less time on that! OK, here we go! Start Time - 17:35 Lecture 1 - Course Overview (skipped!) Lecture 2 - Introduction Key tip to takeaway from this summary is NOT just to click on the 'fix errors' when the 'red' errors come up. They can lead to more errors and mess up the code - then be impossible to track back and sort out! Lecture 3 - Optionals So the big question here is WHY use optionals in the first place. Something to remember here is that Swift is the only language (well, one of the very few at least) that uses optionals. They are a great feature! *Right, rather than play the videos again, I am actually going to use Bob's lecture notes from here: https://www.bobthedeveloper.io/course/swift/1000-swift-fundame...