如何git-lfs在 Amazon EC2 (Amazon Linux 2) 实例上安装?
基于https://github.com/git-lfs/git-lfs/blob/main/INSTALLING.md我尝试过:
sudo yum install git -y;
cd /home/ec2-user;
curl -s https://packagecloud.io/install/repositories/github/git-lfs/script.rpm.sh | sudo bash
-> which tells me afterwards:
The repository is setup! You can now install packages.
sudo yum install git-lfs
-> gives me:
Loaded plugins: extras_suggestions, langpacks, priorities, update-motd
No package git-lfs available.
Error: Nothing to do
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git: 'lfs' is not a git command. See 'git --help'.未来的命令(在 后还不可能执行git lfs install)将基于https://git-lfs.github.com/
git lfs install …Run Code Online (Sandbox Code Playgroud) 我想使用嵌套映射更新 dynamoDB 项目,但我不知道这些项目是否已经存在。如果它已经存在那就好了。但如果该项目尚不存在,我会收到错误消息。我无法选择预先创建那些“空”项目/地图。所以我尝试通过在 UpdateExpression 中使用两个 SET 来解决这个问题:
UpdateExpression: "SET #info = if_not_exists(#info, :fullData), #info.#version = :shortData",
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这让我出现以下错误:
Two document paths overlap with each other; must remove or rewrite one of these paths; path one: [info], path two: [info, V202014]"
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有没有人找到了解决方案,而无需尝试使用 2 次调用来阻止(1 次更新 => 如果错误添加新的)?或者如何绕过这两条路径的限制?
我不明白为什么react-window会在每个(所有)useState事件上重新渲染列表,这些值甚至没有连接到列表本身。有人可以解释一下这是如何内部链接的以及我如何避免这些重新渲染吗?
import React, { useState } from "react";
import { FixedSizeList, areEqual } from "react-window";
function App() {
const [count, setCount] = useState(0);
const handleOnClick = () => {
console.log("PUSHED ME");
setCount(count+1) // why does it trigger a re-render of FixedSizeList ?
}
const Row = React.memo(props => {
const { index, style } = props;
return <div style={style}>Row {index}</div>;
}, areEqual);
return (
<div className="App">
<FixedSizeList
height={200}
itemCount={100}
itemSize={50}
width={'100%'}
>
{Row}
</FixedSizeList>
<div onClick={handleOnClick}>Push Me</div>
</div> …Run Code Online (Sandbox Code Playgroud)