# Creating list ------------------------------- x = list(name = 'Kim',salary=6000,union=T); x x$name x = list('Kim',6000,T); x x[[1]] a = 1:3; b = c('a','b','c') x = list(a,b); x x = list(N=a,K=b) x x = vector(mode='list',2) x
时间: 2024-04-07 14:29:50 浏览: 23
这段代码介绍了 R 语言中如何创建列表。
首先,使用 list() 函数创建了一个名为 x 的列表,其中包含了三个元素:name、salary 和 union。可以使用 x$name 来获取列表中名为 name 的元素的值。
接下来,使用 list() 函数创建了一个名为 x 的列表,其中包含了三个元素,这里直接将元素的值输入到 list() 函数中。
可以使用 x[[1]] 来获取列表中第一个元素的值。
创建一个列表 x,其中包含了两个元素,分别为向量 a 和向量 b。
创建一个列表 x,其中元素的名字分别为 N 和 K,分别对应向量 a 和向量 b。
使用 vector() 函数创建一个长度为 2 的空列表 x。其中 mode='list' 表示该列表可以包含任何类型的元素。
相关问题
<scroll-view
The `<scroll-view>` component in HTML is used to create a scrollable view of content in a web page. It is commonly used to display a large amount of content or a list of items that do not fit on a single screen.
The `<scroll-view>` element creates a container for the content that needs to be scrolled. The content can be any HTML element, including text, images, videos, and other components. The `<scroll-view>` element provides a scrollbar that allows the user to scroll through the content.
The `<scroll-view>` component has several attributes that can be used to customize its behavior, such as:
- `scroll-x` and `scroll-y`: These attributes enable or disable scrolling in the horizontal or vertical direction, respectively.
- `scroll-threshold`: This attribute sets the distance the user must scroll before a scroll event is triggered.
- `scroll-with-animation`: This attribute enables or disables the smooth animation effect when scrolling.
- `upper-threshold` and `lower-threshold`: These attributes set the distance from the top and bottom of the scrollable content that triggers a scroll event.
Overall, the `<scroll-view>` component is a useful tool for creating scrollable content in web pages, allowing users to interact with large amounts of content easily.
git rebase -i commit
The command "git rebase -i commit" allows you to interactively rebase your Git repository against a specific commit. The "-i" flag indicates that you want to use the interactive mode, which will open up a text editor with a list of commits that are going to be rebased.
Once you have opened the text editor, you can choose which commits you want to keep, which ones you want to edit, and which ones you want to delete. You can also reorder the commits if you want to change their order.
When you have finished editing the list, you can save and exit the editor. Git will then apply the changes you made to the commits, creating a new history for your repository.
Note that rebasing can be a powerful tool, but it can also be risky if you are not careful. Always make sure that you have a backup of your repository before you start rebasing, and be sure to test your changes thoroughly before pushing them to your remote repository.
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