List vs scrollview swiftui. Initialization of the ListView and Evaluation of the Body.

List vs scrollview swiftui scrollBounceBehavior(. As items Showing some views of similar layout in a vertical or a horizontal arrangement is as easy as replacing List by the teamed-up ScrollView and ForEach. showsVerticalScrollIndicator = false } var body: some View { How to embed List in ScrollView using SwiftUI UI Frameworks SwiftUI SwiftUI You’re now watching this thread. In both implementations, the data to be arranged has to conform to One way is to treat the whole thing as one long List. Commented Jul 6, 2021 at 10:33. <100) { i in Text("Row \(i Have a look at the idea Adrien's answer gives you: Mutating a state this often leads to heavy body re-evaluations. A List is sized based on its container, so inside a ScrollView it collapses entirely, unless you give it an explicit size. onChange(of: shouldScrollToTop). appearance(). The primary views used for this purpose are ScrollView and List, each A List is a more specialised version of a ScrollView. init(top:0,leading:0,bottom:0,trailing:0) to the first vstack. - List. onDrag, . 2. So when you combine a ScrollView with a ForEach, nothing is really in charge of placing the views the way you want. This must work: public struct LazyList<Data, ID, Content> where Data : RandomAccessCollection, Data. The scroll view reader’s content view builder receives a Scroll View Proxy instance; you use the proxy’s scroll To(_: anchor:) to perform scrolling. The three standard stack views, HStack, VStack, and ZStack, all load their contained view hierarchy SwiftUI’s List view is a container that presents vertically scrollable data arranged in a single column. Your code is wrong. In the following example, the ZStack uses a bottom Leading alignment to lay out two subviews, a red 100 x 50 point rectangle below, and a blue 50 x 100 point rectangle on top. List. 1. listRowSeparator(. Unfortunately, you must wrap the UIScrollView in a I came to SwiftUI from UIKit world and wondered how lists work in SwiftUI. With this new feature, developers can One way is to treat the whole thing as one long List. g. 0) that can be used in same scenario when controls for scrolling is outside of scrolling area (because SwiftUI2 ScrollViewReader can be used only inside ScrollView). How to get the Updated for Xcode 16. SwiftUI ScrollView vertical and horizontal scroll. New in iOS 15. Took me two days to debug. listStyle(GroupedListStyle()) and has no style specified in their code, adding an explicit . This provides a scrollTo() method on its proxy that can move to any row inside the list, just by providing its ID and optionally also an anchor. isScrollEnabled = !flag } } The ScrollView expects dimension from content, but List expects dimension from container - as you see there is conflict, so size for list is undefined, and a result rendering engine just drop it to avoid disambiguty. Reply reply Agree that we are not yet sure List is reusing view-s, but not sure how it would be possible for it to not reuse, i mean why have list, we could have Scroll and VStack in it, why then have List. To support versions below iOS17, ScrollViewReader to the rescue! SwiftUI's ScrollViewReader is a view that works with a proxy, adding scroll offset to show child views. 5 the height of my Discussion. , top and bottom bars. ScrollView { Text("Small Content") }. How to scroll List programmatically in SwiftUI? 0. Then the drop method will be called. some specific view in ScrollView container can be assigned identifier and via ScrollViewProxy. import SwiftUI struct ContentView: View { let SWIFTUI 2. You can achieve it by removing the list row separators . It sets up a ContentView with a : - Text. This is different from ignoresSafeArea(), which merely extends a I have a simple List. If you’ve opted in to email or web notifications, you’ll be notified when there’s activity. In contrast, the presentation of List is influenced by multiple factors, including the selected style, I'm trying to use GeometryReader to assign a maxHeight to a list in a Scrollview. So I am trying to make this List or ScrollView in SwiftUI (not fully iOS 14 ready yet, I have to use the old api, so I can't use ScrollViewReader or other fantasy from iOS 14+ SwiftUI api). The stack aligns to the leading edge of the scroll view, and uses default spacing between the text views. Use this modifier to customize the content margins of different kinds of views. Viewed 1k times A list with disclosure indicators, which performs an animated navigation to a destination scene when the user chooses a list item. Because of the alignment value, both rectangles share a bottom-left corner with the For anybody getting here who, unlike the OP, does NOT need the . SwiftUI 2. but list doesnt do that, when using lists, swift automatically calculates only a few of the list's components which are needed to show the current This article will demonstrate the approach to finding and solving problems in SwiftUI through an optimized list view case, which also involves explicit identification of SwiftUI views, dynamic setting of @FetchRequest, List operating mechanism, and other contents. So, I consider to use lazy stackviews that populated by foreach loop inside a A simple tutorial on how relatively easy it is to create List and Scrollview in SwiftUI while compared to UITableView and UIScrollView in UIKit. If your app design allows to use ScrollView instead of List, you can consider approach demonstrated in How to make a SwiftUI List scroll automatically? post. listStyle(PlainListStyle()) can be an effective solution to getting rid of Stay ahead with the latest updates and deep insights on Swift, SwiftUI, Core Data, and SwiftData. Is there a way to hide it? but with an API of the UITableView. (You'll have to change the ForEach loop back to your data array. At first, we need to adapt buttons to receive ScrollView proxy. The list, by default, does not have a fixed size, which prevents it List vs ScrollView + LazyView Stack? List has lot of limitations right now, it is not as flexible as tableview in uikit. 0+. SwiftUI’s Table view type let us create lists with multiple columns, including selection and sorting. Second: If you want to apply an action drop by item you have to move you drop method inside the foreach. List IS NOT LAZY on MacOS. Initialization of the ListView and Evaluation of the Body. Memory Management: Be cautious of the views you add to ScrollView, as they can impact memory usage. Also you dont need to change the Card's scrollview to If your app design allows to use ScrollView instead of List, you can consider approach demonstrated in How to make a SwiftUI List scroll automatically? post. One of the new ScrollView modifiers introduced for iOS 17 was . scrollPosition(id:), which allows us to bind the ID of the scrolled-to view. <5) { row in Text("Row \(row)") } A list has a special appearance, depending on the platform. Second row: The modifier List(1. The stack is “lazy,” in that the stack view doesn’t create items until it needs to render them onscreen. It also contains two buttons, one each at the top and bottom. listRowInsets(. scrollTo to that view), like in below example. listRowBackground() defining top and bottom EdgeInsets Overview. We will explore a ScrollView, UIScrollView equivalent in SwiftUI. Since iOS 14 it is possible to do with ScrollViewReader (ie. The system automatically applies the default content Therefore, it can be ruled out that the lag is caused by Core Data. First row: Before iOS 17, the container and subviews lacked explicit width assignments, resulting in a cluttered UI. 548. The question is how to make sure that the list of elements is effective in terms of memory management and speed. You could also drop the list, have a ScrollView Updated for Xcode 16. I tried a few option and I think a combination of sequenced and simultaneously allows two gestures to run the same time. Scroll views can scroll horizontally, vertically, or in both directions, and you can also control whether the system should show scroll indicators next to them – I want to place a List within a ScrollView to enable scrolling for the entire screen, as I am using a LazyVGrid. - Text. Here is possible alternate solution in Xcode 12 / iOS 14 (SwiftUI 2. Hot Network Questions The highest melting point of a hydrocarbon Implied warranties vs. In my case, I load messages from the CoreData and display them in a LazyVStack, so in my case, scrolling to the last message does not work, it seems to me simply because a bottom last view did not render, because rendering List view is a view that contains child views and displays them in a scrollable manner. @Nojas for a new version you can try to this: change @Binding var shouldScrollToTop: Bool = true to @Binding var shouldScrollToTop: Bool (but at this time you need to provide @State property from parent. The same result will be for List instead of ScrollView. However, when it comes to SwiftUI’s I am also writing an application with a chat on SwiftUI and I also have a lot of headaches with a bunch of ScrollView and LazyVStack. You can no longer take advantage of the native UI components that come prebuilt with SwiftUI, and neither can you use SwiftUI modifiers such as . However, like any other framework, it has its quirks and glitches. SwiftUI provides a safeAreaInset() modifier that lets us place content outside the device’s safe area, while also having other views adjust their layout so their content remains visible – it effectively shrinks the safe area to ensure all content can be seen as intended. init(top:0,leading:0,bottom:0,trailing:0) to the first Updated for Xcode 16. ScrollView is a generic container that can hold any content and make it scrollable. you can get rid of showing indicators for all Lists, but with an API of the UITableView. Update. ScrollView or List, How to make a particular scrollable view (SwiftUI) 3. <5, id: \. Sometimes you don’t want to have your content arranged in separate cells (ie, in a List) but still want the ability to scroll the content. In the previous post, we learned two ways to populate a list view's Why are you using a Scrollview instead of a List? A List would reuse the cells which is much better for performance and memory management. I extracted the List and last Text into their own view, using @ViewBuilder and I want to set the maxHeight of the List to . struct ContentView: View { var body: some View { ScrollView() { ForEach(0. For example, this creates 100 colored boxes in a vertical scroll view, and when you One solution that people have often suggested is, using a custom implementation of a List using a simple ForEach loop. Unfortunately, using simply the GeometryReader isn't working, since it returns a value of 10 no matter what content is inside the ScrollView. Use this modifier to hide or show scroll indicators on scrollable content in views like a Scroll View, List, or Text Editor. From Apple's documentation, we can do: @Binding var items: How do I recalculate the yOffSet starting from 0, for items in a scrollview in SwiftUI when the user changes orientation. Modified 3 years, 6 months ago. – Day 13: LazyVStack vs List – Efficient List Building in SwiftUI 🛠️. User Experience: Ensure that the ScrollView is easily navigable and accessible. In the following example, the scroll view will automatically inset its content by the safe area plus an additional 20 points on the leading and trailing edge. If you want to programmatically make SwiftUI’s List move to show a specific row, you should embed it inside a ScrollViewReader. 3. There are currently two ways to stop a List from scrolling:. (I don't know about iOS) About the question. So I came up with two different implementations: List of cells based on List: By default, SwiftUI automatically applies content inset around scrollable content such as ScrollView or List to avoid the system UI, e. For complex Views inside the ScrollView Xcodes SwiftUI Profiler shows body evaluations in a scale of thousands - for a view that's contained 3 times inside the Scrollview. listStyle(PlainListStyle) and . For example, this creates 100 rows in a list, and when you press the button it I've built a view that has scroll view of horizontal type with HStack for macOS app. The first step in making your VStack scrollable is by wrapping it in a ScrollView. ScrollView vs. Improved in iOS 17. If you’re using iOS 17 or later, Step 1: Add a ScrollView. This modifier applies the prefered visibility to any Overview. How would I call some code when the List is scrolled? Thanks! ios; swift; swiftui; SwiftUI: Add List in to a scrollview with icon above. Subscribe to Fatbobman’s Swift Weekly to get exclusive articles, tips, and curated resources delivered straight to your inbox The SwiftUI way. Ask Question Asked 3 years, 6 months ago. e. Add your VStack contents. ScrollViewReader is one of my favorite new features in the new version of SwiftUI. For example, if the app based on on UIKit, and you want to add SwiftUI, then you should be considered that the separators between cells in the List, if they are not needed, are removed in a very When building various kinds of scrollable UIs, it’s very common to want to observe the current scroll position (or content offset, as UIScrollView calls it) in order to trigger layout changes, load additional data when needed, or to perform other kinds of actions depending on what content that the user is currently viewing. hidden) and setting the list row background to an InsettableShape . The examples in this article need to be run on iOS 15 or above, and the technical It seems that there is two problems with your code. frame(maxWidth: . Trying to programmatically determine when an item is being displayed on screen in a ScrollView in SwiftUI. List view - any way to scroll horizontally? 1. Its content in your code is a ForEach, which generates views; it doesn't really intend to lay them out. In the following example, a Scroll View contains a Lazy VStack that consists of a vertical row of text views. Demo prepared and tested with Xcode 12 / iOS 14 (it is used some SwiftUI 2. (1) put the header within the List, or (2) use a ScrollView instead of a List. For more information about the difference in performance please see here LIST VS SCROLLVIEW: as some of you may not know, list works a little bit different from a scroll view. As a bonus, you’ll also see how you can achieve the same with a LazyVStack. 0 features so if needed SwiftUI 1. For a deeper understanding of SwiftUI's layout size determination mechanism, I recommend reading SwiftUI Layout: The Mystery of Size. It is possible to wrap a UIScrollView in order to provide this functionality now. One such issue that developers often encounter is related to the combination of ScrollView and LazyVStack. showsVerticalScrollIndicator = false } How can I hide/remove ScrollBar in ScrollView in import Combine import SwiftUI struct FeedbackScrollView<Content: View>: View { /// Used to inform the FeedbackScrollView if the view changes (mainly used in 'flows') var viewIndex: Double /// Notifies if the scrollview is scrolled @Binding var scrollViewIsScrolled: Bool /// Notifies if the scrollview has overflow in it's content, to indicate if For anybody getting here who, unlike the OP, does NOT need the . infinity) } } } } struct ListElem: View I want to determine the height of the content inside my (vertical) ScrollView. self) { i in ListElem() . ScrollViewReader for iOS 14. SwiftUI uses this presentation on watchOS, tvOS, and on most iOS devices except as I was able to convert it to a List just by replacing the ScrollView with List and adding . – Asperi Commented Nov 22, 2019 at 17:30 Updated for Xcode 16. 47. SwiftUI uses this presentation on watchOS, tvOS, and on most iOS devices except as described below. SwiftUI is a powerful declarative UI framework for building user interfaces across all Apple platforms. However, the new version of SwiftUI has updated ScrollView with a new modifier called scrollPosition. Neither of the above methods stop it from I have a view with a search bar at the top and a SwiftUI List below. I understand that a ScrollView renders at one time rather than rendering as items appear (like in List), but I am constrained to using ScrollView as I have . SwiftUI Weird issue about List. Tested with Xcode 12b. A List in SwiftUI is scrollable by itself, and is designed to be a full fledged view that takes up all available space. Here is an example of a SwiftUI list view. because SwiftUI List is using UITableView for iOS behind the scene:. The following example creates a Scroll View containing 100 views that together display a color gradient. Note: Row content design is out of consideration scope Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Note. We also use the id view modifier to explicitly set the identifier to the view inside the scroll. "no returns or refunds" signs Here are 2 possible solutions. Use it like this: struct ContentView: View { var body: some View { List(1. – Asperi Commented Nov 22, 2019 at 17:30 @cyden Are you referring to the flicker as a glitch? or is it the fact when you tap an item it grows over the previous item, the list kind of scrolls? I was able to convert it to a List just by replacing the ScrollView with List and adding . I agree this is correct to have horizontal items on screen, but not sure it will work as List. A two-panel split view, with the top-level data as a list on the left side and the detail on the right. In the updated code, I just added As of Beta 3 there is no native SwiftUI API for paging. Still a lot to lear from SwiftUI. Using UITableView. The answer to this question explains it better: SwiftUI provides several views that can be made scrollable, allowing users to navigate through large amounts of content. ) As can be seen in the linked documentation, a SwiftUI List can be created like this: SwiftUI List with pseudo code. ScrollView(. All views inside a Scrollview are rendered immediately, even if they are offscreen. If you have some understanding of SwiftUI’s NavigationView, you should know that SwiftUI pre-instantiates the target view of NavigationLink (but does not evaluate the body). struct ContentView: View { init() { UITableView. but with an API of the UITableView. Modified 1 year, 11 months ago. SwiftUI ListView. Click again to stop watching or visit your profile to Any Indicators (List, scrollView, etc. when you create a scrollview, it always calculates whole the ScrollView, then shows it to us. With the list when a cell scrolls out of sight, it gets removed from the view which helps greatly with performance. I'm trying to add a list of items into a view, while having an icon above. While both are great for displaying large amounts of content, they have distinct use cases and performance differences. isScrollEnabled = false (but this can unintended side-effects); Using the 3rd party dependency Introspect; Caveats List contained in a NavigationView. 0. scrollTo actions. Not only can you wrap a ScrollView with a Overview. ScrollView { //My Content } Is this possible? I've tried a few things but nothing seems to work. A key point is that ScrollView is not a vertical stacking container. swipeActions. To achieve a onTouchDown I used a DragGesture with minimum distance of 0. Inserting non-list elements in a SwiftUI view. SwiftUI’s ScrollView moves smoothly by default, but with the scrollTargetLayout() and scrollTargetBehavior() modifiers we can make it automatically snap to either to specific child views or to whole pages. Add a comment | Your Answer SwiftUI List inside ScrollView. ScrollView { VStack { // Your VStack content here } } Step 2: Add VStack Content. Either conform elements to the Identifiable protocol, or pass a key path to a unique identifier as the id parameter of init(_: id: content:). In Learn how to use SwiftUI’s onAppear and Combine to build a List that scrolls forever. 5 of 61 symbols inside <root> SwiftUI updates. SwiftUI List inside ScrollView. because SwiftUI List is using UITableView for iOS behind the scene: init() How can I hide/remove ScrollBar in ScrollView in SwiftUI? 330. Updated for Xcode 16. Key Differences: LazyVStack: J ust in case you’re designing a SwiftUI app with a long list or view, you may want to provide a more interactive experience for users by allowing them to jump to specific parts of the list. It fired when the ScrollView appeared, even if it showed the first 20 items. If you want the scroll view to scroll to a particular location, you have to figure out Working with List. Apple lies in wwdc20-10031 when telling that List is lazy. New in iOS 17. SwiftUI I appended a Rectangle at the end of 100 Text items inside a ScrollView, with a print in onDidAppear. , just some views we’ve created by hand – we need to turn to SwiftUI’s ScrollView. onChange(shouldScrollToTop) replace to . listStyle(PlainListStyle()) can be an effective solution to getting rid of the undesired space at the top of their list. You can see that we have an extra space around the content, which makes it always visible. They changed the ScrollView API from Beta 2 to Beta 3 and I wouldn't be surprised to see a further update. Using approach from my post SwiftUI: How to scroll List programmatically [solution]?, it is possible to add the following extension. I've filed feedback and recommend you do the same. Before the release of iOS 14, it’s not easy to control the scrolling position of the built-in ScrollView. If you want to load content lazily – i. For example, you can use this modifier to customize the margins of scrollable views like Scroll View. If you want to programmatically make SwiftUI’s ScrollView move to a specific location, you should embed it inside a ScrollViewReader. and . 2021, SwiftUI 2. . (This is NOT "answering in a comment," because this approach does NOT As you can see in the example above, we use the scrollPosition view modifier with the binding to the integer value. Viewed 3k times 5 . I have a simple List. List view is a performant alternative to ScrollView in terms of memory and performance. I tried the same with List, and the behaviour is different. – I attempted to implement a similar list style in my app only to find that the gestures conflicted with the ScrollView. The default ContentMarginPlacement (. extension ListScrollingProxy { func disableScrolling(_ flag: Bool) { scrollView?. automatic) will cause the length between the indicator and content to be inconsistent. always) The above code example creates a ScrollView that will bounce in any direction, no matter the size of its content. because SwiftUI List is using UITableView for iOS behind the scene: init() { UITableView. However, this comes with a huge drawback. However, as the view moves those values will change, and SwiftUI will automatically make sure GeometryReader stays updated. For example, on iOS a list will appear as a table view and insert separator lines between its vertically stacked views. For the purpose of this question, I created the following project : GeometryReaderTesting. ) - Works from iOS 13. 1, I believe this to be a bug that Apple needs to resolve in future versions of SwiftUI. 0 support some more tuning will be needed) struct LazyVStackSelectionable<SelectionValue, Content> : View where SelectionValue : Hashable, Content : View { @Environment(\. SwiftUI’s scrollIndicators() modifier allows us to determine whether to show the scroll indicators or not – those are the little flashing bars that both give the user a sense of the size of our content, but also allows for a long press scroll. One way to do this is by using the SwiftUI List inside ScrollView. However, when it comes to SwiftUI’s Add a LazyHStack to a horizontal ScrollView or a LazyVStack to a vertical ScrollView; Add enough content such that the content size of the scroll view exceeds its bounds; Scenario 1 - Pull the scrollview beyond the bounds (as if you were pulling to refresh) Expected behavior: It behaves as expected where the scrollview stays under your finger Updated for Xcode 16. Try SwiftUI List if you can’t achieve results using ScrollView; Conclusion Exploring SwiftUI Sample Apps. While ScrollView and List might seem similar, they serve different purposes. Previously we used DragGesture to store a width and height as an @State property, because Performance: Prefer LazyVStack or LazyHStack inside ScrollView for handling large lists. First: many article on the web report that the drop is not working on List component, but you can replace the List by a ScrollView. This provides a scrollTo() method that can move to any view inside the parent scrollview, just by providing its anchor. vertical) { VStack(spacing: 0) { ForEach(items) { item in // your code here } } } The ZStack uses an Alignment to set the x- and y-axis coordinates of each subview, defaulting to a center alignment. SwiftUI offers two views with this capability, ScrollView and List. You could also drop the list, have a ScrollView with a VStack inside it - and format the elements at the top so that they look like a list. That is, when the main menu is displayed, the list view has How to make a SwiftUI list scrollable in tvOS. 44. You’ve seen how List and Form let us create scrolling tables of data, but for times when we want to scroll arbitrary data – i. The goal is to have only a specific number of rows A List is a more specialised version of a ScrollView. You don’t need to set id manually if you are using ForEach with identifiable types or provide the KeyPath to id. List view is a view that contains child views and displays them in a scrollable manner. They work quite differently from regular lists because we pass the Table an array of data to show then specify values to display using key paths, each time also passing a title to show in the header area. However, my attempt to embed the LazyVGrid in a List did not produce the desired result. I need to detect when the List is scrolled so I can dismiss the search bar keyboard. Click again to stop watching or visit your profile to It was very difficult to achieve a similar operation in List or TextEditor before. By default, SwiftUI’s VStack and HStack load all their contents up front, which is likely to be slow if you use them inside a scroll view. It just takes its content and makes it scrollable. Currently when I build my code it, it separates the icon and the list, which is what I'm looking for but it makes the icon The source code for this example lives here. Element: Identifiable, ID : Hashable, Content: View { public var data: Data public var When we use the frame(in:) method of a GeometryProxy, SwiftUI will calculate the view’s current position in the coordinate space we ask for. Let’s recreate the previous example with ScrollViewReader. struct DemoScrollToView: View { var body: some View { ScrollView { ScrollViewReader { sp in // << here !! How to embed List in ScrollView using SwiftUI UI Frameworks SwiftUI SwiftUI You’re now watching this thread. Note that the Troubleshooting SwiftUI's ScrollView and LazyVStack Glitches. When sate changed (for example by button/toggle) your Updated for Xcode 16. You can use ForEach views inside List views to have both dynamic and static content – a very powerful feature of SwiftUI. , only when it scrolls into A list with disclosure indicators, which performs an animated navigation to a destination scene when the user chooses a list item. In today's post of the #30DaysOfSwift series, we’re diving into the two essential components for building lists in SwiftUI. As an example, this places 10 rounded rectangles in a horizontal scroll view, with each one being a scroll target. 0. – By default it takes default space based on context. editMode) var editMode private var selection: One common question that arises when using scroll views in SwiftUI is how to detect the scroll position. This topic is a continuation of the topic about ForEach. To navigate the symbols, press Up Arrow, Down Arrow, Left Arrow or Right Arrow . SwiftUI’s ScrollView component allows users to scroll through content that surpasses the bounds of the screen. As a pure layout container, LazyVStack offers developers tremendous freedom, allowing for a more precise recreation of design styles. Put the grid into a single row of the list, and use . Prior to the release of iOS 17, developers had to come up with their own solutions to capture the scroll positions. If you want to A list with disclosure indicators, which performs an animated navigation to a destination scene when the user chooses a list item. As I add more items, I find myself needing to manually increase the frame size of the list. onDelete, or . Remember that you should always use the Here it is. listRowSeparator(_:edges:) modifier (and others) to hide row separators. List, on the In above example, a list view has 3 scroll view rows. New in iOS 16. I would like to hide the vertical scrollbar on the right. Thanks! Here where we can use the scroll view scroll property – Anisetty Mounika. Is there a way to circle those items using keyboard arrows? How to scroll through items in scroll view using keyboard arrows in SwiftUI? Ask Question Asked 1 year, 11 months ago. When building various kinds of scrollable UIs, it’s very common to want to observe the current scroll position (or content offset, as UIScrollView calls it) in order to trigger layout changes, load additional data when needed, or to perform other kinds of actions depending on what content that the user is currently viewing. Consider lazy stacks for large numbers of views. If your List is contained in a NavigationView then it will still scroll. After having spent hours researching and attempting possible fixes and workarounds for this issue, as of XCode 11. When you use For Each, each element you iterate over must be uniquely identifiable. ohq yery ioxtc fdlt dxwl zmttxhq kektfdw qllmxbg whobi rvxt