overview for applishish
Scheme entire spec is about 50 pages, it rarely changes (we on version 7 since 1975), and it has basically no special cases to speak coque iphone xr mom of. It garbage collected, and has a simple (and powerful) numeric tower, and the syntax coque samsung galaxy s7 edge joker is simple enough that it easy to see concepts like functions, recursion, and environments. There no syntax to get bogged down in.
Swift doesn have a real specification or standard yet, the published language reference is over 500 pages long, and it changes every year (so far). It got more reserved words than even C++ I don know of any language which is coque samsung grand prime ve personnalisé more complex. Several coque samsung grand prime dentelle parts are undocumented, and there only one coque apple pour iphone xr implementation so far, and so the answer to what the language does in many cases is „whatever the compiler happens to do now“ (though there a big stream of SEs to try to nail down its behavior). It young enough and complex enough that there still a decent chance you coque iphone xr homer run into compiler bugs, or at the very least, lousy and misleading error messages. Its memory model coque samsung s6 rose is almost unique in the world of computing (shared only with later versions of Objective C), and neither as straightforward to describe as manual allocation nor as easy to use as coque samsung galaxy a3 pailleté garbage collection. Its error coque samsung s5 tennis reporting model is definitely unique in the world of computing, and is designed for performance, not usability.
Java isn nearly as pretty but its syntax is simpler (only about half the number of reserved words, with almost no compiler inferred behavior), and there a real spec, and we pretty sure everything is documented because there multiple independent implementations. It has a GC and exceptions, both of which are common features in most other modern languages, and which make life easier for programmers. It runs in a VM, and the entire stack is open source, so when something goes wrong you can see everything it trying to do. The process never just dies coque apple cuir iphone xr with SIGABRT, which is a godsend when you learning. Python shares all of these qualities.
Why do you say starting with Scheme is „crazy“ How many people have you taught Scheme to, and how many had a problem with it
I see questions on r/swift all the time which simply never happen in Scheme because Scheme syntax just isn that complex. You never see new Scheme programmers struggling to get the syntax correct for a function call, but I see it with new Swift programmers. You can even begin to learn concepts like recursion if you getting hung up on function call syntax.
Thanks for taking the time to write out an answer. Unfortunately I think you missed the point of my question.
You’d want to easily re wire your app if your customer doesn’t know exactly what coque samsung a5 2016 ebay he wants from the very start which is 90% of the time in my experience. The requirements change all the time during development. Being able to easily rewire the app makes your life easier. Another case would be a redesign of the app or part of the app. It happens if you work on an app that is maintained for long periods of time.
I asked why you want this particular kind of flexibility, and you essentially answered that you want it for the flexibility. I completely understand that requirements change all the time. I looking for some specific example of a requirements change for which this type of flexibility would be beneficial. I been writing software professionally for decades and I can say I ever seen „rewire a flow“ as something that either very coque samsung galaxy s5 personnaliser common, or very difficult. In a typical project, I see coque iphone xr soigne a minor adjustment to the user workflow every year at most. That not nearly enough to justify a significant architecture change.
Buy“ button can present BuyViewController on iPhone, meilleure coque samsung note 9 it can present an alternative VC on iPad, it can present LoginViewController if user is not logged in.
But what „alternative VC“ coque samsung core prime johnny hallyday would it be, on iPad only, other than a BuyViewController Would clicking „Buy“ do something different on a different platform Wouldn that just confuse users, who expect the app coque samsung j5(2016) to act the same as they used to You just tossing around vague what ifs.
Granted, it could present LoginViewController if you not logged in, but that seems like an isolated case, an easy „forward to LoginVC“ call to add in a few places, and something that everyone knows about at the start of the project. Is there any other situation in which a control would point to two completely different VCs And/or, one in which you wouldn coque samsung j1 trop belle know about it well in advance of writing any code
This logic needs to be somewhere and VC is not a good place for that (Single coque samsung galaxy a3 naruto Responsibility Principle).
This seems a little coque samsung j5 2017 football weak to me. SRP is a good guideline, but no class is truly single responsibility, and this particular item takes very little (or no) code. What exactly coque iphone xr couleur noir is a VC for, if not (as the video says) UI design, or navigation
For me the main benefits of using Coordinator pattern are: VCs are isolated. . It easy to grasp the navigation flow . Testability
OK, but if these are your priorities, why use VCs at all A functional approach (like React) is far better at all of these. Stateful objects are ultimately a hot mess to reason about, on a sufficiently large and complex application, no matter how you auchan coque samsung j5 split them up.
On the one hand, I hearing: „We got a big complex application that changes significantly all the coque samsung galaxy a3 2017 harry potter time. We use Swift, which has good support for value types and immutable objects, to make the model easier to reason coque samsung a5 2017 3d about.“ But on the other hand: „Our coque samsung galaxy pocket 2 amazon user workflows change every day, too, but we going to keep using mutable interconnected objects (with weak backrefs and force casts and .) for the UI layer.“ That sounds a little nuts to me.
Companies are already taking shortcuts (coughElectroncough) to deal with macOS and iOS and those other platforms that users demand. A lot of indie apps are never going to support watchOS or tvOS because they already so different, and our time is limited. Anything more than adding some new size classes is a non starter.
Split iOS in two, with completely new user interaction models Maybe it a good concept in theory, but for developers it sounds like a nightmare. Tell me which one you want me to do:
I raise my app prices, so I can hire people to support all these (hint: people already complain my prices are too high, despite being cheaper than any software I ever bought myself)..