CS193p | CS193p 2017 & 2021 - Developing Apps | iOS library

by kingcos Swift Version: Current License: MIT

X-Ray Key Features Code Snippets Community Discussions(10)Vulnerabilities Install Support

kandi X-RAY | CS193p Summary

CS193p is a Swift library typically used in Mobile, iOS, Uikit applications. CS193p has no bugs, it has no vulnerabilities, it has a Permissive License and it has low support. You can download it from GitHub.

Notes & code for CS193p - Developing Apps for iOS.

Support

Quality

Security

License

Reuse

Support

CS193p has a low active ecosystem.

It has 81 star(s) with 23 fork(s). There are 8 watchers for this library.

It had no major release in the last 6 months.

CS193p has no issues reported. There are no pull requests.

It has a neutral sentiment in the developer community.

The latest version of CS193p is current.

Quality

CS193p has no bugs reported.

Security

CS193p has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

License

CS193p is licensed under the MIT License. This license is Permissive.

Permissive licenses have the least restrictions, and you can use them in most projects.

Reuse

CS193p releases are not available. You will need to build from source code and install.

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CS193p Key Features

No Key Features are available at this moment for CS193p.

CS193p Examples and Code Snippets

No Code Snippets are available at this moment for CS193p.

Community Discussions

Trending Discussions on CS193p

Preview crashed after added LazyVGrid

Is it possible to use Xcode 11.5 on the latest macOS Big Sur?

Forcing a View to the bottom right of View in SwiftUI

Error: Value of type 'some View' has no member 'stroke'

SwiftUI CS193P - Cannot use instance member 'card' within property initializer; property initializers run before 'self' is available

SwiftUI not updating ObservedObject in child-view

Can't Infer Generic Type 'S' in SwiftUI 'Text' in CS193p project, in Xcode

Advanced animations in SwiftUI

SwiftUI - How to set a non static var from a static function

SwiftUI custom shape behavior not as expected

QUESTION

Preview crashed after added LazyVGrid

Asked 2021-May-29 at 18:19

I am learning Stanford CS193p, and everything went so well till switching LazyVGrid with HStack.

I checked my code with the one professor made, they are the same. But the confusing part of my code is that, when my emojiCount = 4, preview worked well, I can use LazyVGrid, however when I changed emojiCount value more than 4, like 5 or 24, it would crash right away.

The crash info is this:

Diagnostics

And here is my code:

...

ANSWER

Answered 2021-May-29 at 18:19

Run the code in the simulator and you will see the error

Fatal error: each layout item may only occur once

This leads to the emojis. You have a lot of them but only 4 different types. In a loop where the items are referenced by \.self you are responsible for making sure that the items are unique.

Source https://stackoverflow.com/questions/67754403

QUESTION

Is it possible to use Xcode 11.5 on the latest macOS Big Sur?

Asked 2021-Feb-04 at 22:53

I am following Stanfords' CS193p Developing Apps for iOS online course. I am using Xcode 11.5. I didn't update because that's the version the course instructor (Paul Heagarty) is using. I have to have (for now) this Xcode version. So I didn't yet updated my macOS to Big Sur, because I am afraid, that I will not be able to use Xcode 11.5 on macOS Big Sur.

Is it possible to use Xcode 11.5 on the latest macOS Big Sur? Or will Xcode 11.5 it just stop working if I will update to Big Sur? I have an Intel-based Mac. (not M1 Apple Silicon)

And also - can I have both the Xcode 11.5 & the latest Xcode 12.x version at the same time?

...

ANSWER

Answered 2021-Feb-04 at 22:53

Xcode 11.5 is not officially supported on Big Sur so 11.5 is not guaranteed to run on Big Sur, but you should be able to use 11.5 on Big Sur.

You can have multiple versions of Xcode installed. If you install Xcode from the App Store, make sure you change the name of your Xcode 11.5 install from Xcode to something else, such as Xcode11.5. If you don't change the name of your existing Xcode installation, the new version of Xcode will overwrite the existing version.

Xcode 12.4 runs on Catalina so you can have both Xcode 11.5 and 12.4 installed without having to install Big Sur.

Source https://stackoverflow.com/questions/66045937

QUESTION

Forcing a View to the bottom right of View in SwiftUI

Asked 2020-Dec-26 at 18:06

I'm teaching myself SwiftUI by taking the 2020 version of Stanford's CS193p posted on YouTube.

I'd like to have a ZStack with a check box in the bottom right. This code puts the check mark right in the middle of the View.

...

ANSWER

Answered 2020-Nov-24 at 00:44

Try applying

Source https://stackoverflow.com/questions/64944848

QUESTION

Error: Value of type 'some View' has no member 'stroke'

Asked 2020-Dec-04 at 10:05

I am following Stanfords' CS193p Developing Apps for iOS online course. I am using Xcode 11.5. (I didn't update because that's the version the course instructor (Paul Heagarty) is using.)

I'm trying to do the Assignment 3 (Set Game). Currently (to avoid duplicating code) I am trying to replace this fragment:

...

ANSWER

Answered 2020-Dec-04 at 10:05

stroke is defined on Shape, not View and you are returning Shapes, not just Views. You need to change the return type of shape to some Shape.

Sadly @ViewBuilder needs the return type to be some View, not some Shape, so you need to remove the @ViewBuilder attribute and make sure your function returns the same Shape from each branch. To achieve this, you can implement a type-erased Shape, called AnyShape similar to AnyView for View and return the type erased version of each Shape.

Source https://stackoverflow.com/questions/65131862

QUESTION

SwiftUI CS193P - Cannot use instance member 'card' within property initializer; property initializers run before 'self' is available

Asked 2020-Nov-21 at 09:03

I am following Stanfords' CS193p Developing Apps for iOS online course. I am using Xcode 11.5. (I didn't update because that's the version the course instructor (Paul Heagarty) is using.)

I'm trying to do the Assignment 3 (Set Game). I know my code is probably poorly written in many places, but I am going to refine it later, right now I am just trying to make it work with no errors. The error I currently can not fix is this:

...

ANSWER

Answered 2020-Nov-21 at 03:30

This is going to sound a bit existential, but the compiler is complaining because you are trying to set shading to a vault that does not exist yet. When you first set the values of your variables in the View, they do not actually exist. You are telling the compiler what they are going to be, but the compiler insists that the thing that you have said the variable will be actually exists.

There are ways around this, such as George E. suggesting a lazy var. I don't want to go down that route as that is beyond a beginner. For your purposes just know, when you define a variable, it must be give an actual value. The compiler won't complain about var x = 1 because it knows what 1 is, and it already exists.

Your exact error says you can't use the instance card because it has not been initialized at the time you are trying to use it. In other words, it has no value when you are trying to assign it, as card.shading to shading.

Now, that being said, why do you need shading at all? Isn't the shading you want always going to be card.shading? Rather than make a separate variable, just use what you have. Learn to love dot notation and keep it simple.

The last thing to consider, outside of your original question, is that you have a view without any State variables. Your compiler will complain at runtime if you try to change a variable that is not marked @State. What you have created is a fixed view, not one that can change or update.

Source https://stackoverflow.com/questions/64938693

QUESTION

SwiftUI not updating ObservedObject in child-view

Asked 2020-Oct-14 at 07:23

So I tried to learn SwiftUI from Stanford CS193p. This works great, however, I can't get my head around why this is not working. I have the same exact view as the instructor has:

...

ANSWER

Answered 2020-Jun-10 at 10:57

The implementation of the equality operator in your Card struct only compares ids. The CardView is not updated because SwiftUI deduces the card hasn't changed.

Note that you may want to check for the other properties of card as well (CardContent would need to conform to Equatable).

Source https://stackoverflow.com/questions/62299843

QUESTION

Can't Infer Generic Type 'S' in SwiftUI 'Text' in CS193p project, in Xcode

Asked 2020-Jul-29 at 05:23

Background

I am following Stanfords' CS193p iOS Development online course. I am with Xcode 11.3 and Swift 5.1.2.

Problem

By the end of lecture 5. ViewBuilder + Shape + ViewModifier, an error occurred to me, which is the Swift compiler reported 'Generic parameter 'S' could not be inferred'. Snapshot: IDE complains about it

Code Snippets Code in EmojiMemoryGameView.swift ...

ANSWER

Answered 2020-Jul-29 at 05:23

In your struct CardView: View, you have

Source https://stackoverflow.com/questions/63146631

QUESTION

Advanced animations in SwiftUI

Asked 2020-Jul-16 at 20:04

I'm trying to learn SwiftUI from a series of lectures from Stanford(https://cs193p.sites.stanford.edu/) and am having some issues with animations. I'm creating the game Set which is a matching game where you select three cards and if they match then they are replaced with new cards etc.

Currently to show that a card has been selected the border color turns orange. The issue that im having is that when three cards are selected and match I would like the border color to flash green if matched or red if not matched. This is the code that that draws the grid of cards

...

ANSWER

Answered 2020-Jul-16 at 20:04

I assume the problem is with changing the color and changing it back in some amount of time. If that is the case, use DispatchQueue.asyncAfter(deadline: DispatchTime) {}.

usage:

Source https://stackoverflow.com/questions/62942450

QUESTION

SwiftUI - How to set a non static var from a static function

Asked 2020-Jul-01 at 07:27

I'm currently following a series of lectures from Stanford to learn Swift (Code is from lectures 1-4 plus the homework I'm trying to complete) and am having an issue with setting an instance var(non-static) from a static function. I have gotten this to work but I would like it to be able to have different instances of the game have different themes

...

ANSWER

Answered 2020-Jun-30 at 09:12

Just let your ThemesArray be a static variable like it is. However, you won't need to declare selectedTheme as static. As you say, it is an instance variable.

Declare selectedTheme as following:

Source https://stackoverflow.com/questions/62649437

QUESTION

SwiftUI custom shape behavior not as expected

Asked 2020-Jun-13 at 21:56

I'm following Stanford CS193P 2020 youtube sessions. I got stuck with the behavior of my custom diamond shape. My custom shape frame (no matter which modifier I place frame, etc) is always bigger than the space where it is drawn and the built in shapes always take the given space. The result of this is that all my custom shapes have different sizes according to the space its frame takes. I don't know how to solve this problem. The concrete question would be, how do I obtain the same frame in my custom shape as I obtain in rectangle or capsule?. I'll paste you an image of the drawing and the code below. Thanks for your help.

Custom shape code.

...

ANSWER

Answered 2020-Jun-13 at 21:56

Solved I was drawing wrongly my diamond shape. I needed to draw in the whole frame not, just the minimun dimension. Then the diamond would occupy the whole frame.

Source https://stackoverflow.com/questions/62360377

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