我想做以下事情:
如何在python中做到这一点?
我想删除特定列上具有最高值的行
(我知道有答案,但由于某些原因它们都不适用于我)
我在Visual Studio c#中使用SQL进行的所有编码
我的数据库:小时
Hours_Left | Hours_Spent | Time_Written | Mode | Time_Start | Time_End | Index
==============================================================================
aa | bb | cc | dd | ee | ff | 3
gg | hh | ii | jj | kk | ll | 4
mm | nn | oo | pp | qq | rr | 5
ss | tt | uu | vv | ww | xx | 6
[Hours_Left] VARCHAR (MAX) NULL,
[Hours_Spent] VARCHAR (MAX) NULL, …
Run Code Online (Sandbox Code Playgroud) 我需要一些数据来使用 Amcharts 创建图表。的chartData
是包含所有数据中的曲线图来表示该阵列。
这是我的代码:
chartData6.push({
"Concession": $scope.concessionName,
"Total missions": $scope.nbMission,
$scope.brandName :$scope.nbMissionTotal
});
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$scope.brandName
是一个动态值。我无法推送它,我的代码甚至无法编译?我该怎么办?
使用 Xamarin 表单和 PCL
我在 Page.Xaml 中看到了很多关于将 VM 与 View 绑定的示例和片段
使用这个块
xmlns:prism="clr-namespace:Prism.Mvvm;assembly=Prism.Forms"
prism:ViewModelLocator.AutowireViewModel="True"
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如果我想在后面的页面代码 (Page.cs) 中绑定视图模型呢?
我正在尝试通过 firebase 添加身份验证,但它给了我一个错误
类型错误:firebase_compat_app__WEBPACK_IMPORTED_MODULE_2__.default.default.auth 不是函数
这是所有验证代码
import Head from "next/head";
// var firebase = require("firebase");
import firebase from "firebase/compat/app";
import "firebase/auth";
import { useAuthState } from "react-firebase-hooks/auth";
import Reddit from "../components/Reddit";
firebase.initializeApp({
apiKey: "<api-key>",
authDomain: "<auth-domain>",
projectId: "<project-id>",
storageBucket: "<storage-bucket>",
messagingSenderId: "166670883433",
appId: "1:166670883433:web:f24816c8fe909b0f89e0f8",
});
const auth = firebase.default.auth();
const [user] = useAuthState(auth);
export default function Home() {
return (
<div className="h-screen bg-black text-white">
<Head>
<title>Reddit - Dive into anything!</title>
<link rel="icon" href="/logo.svg" />
</Head>
{user ? <Reddit /> : …
Run Code Online (Sandbox Code Playgroud) 如何在按钮内制作图像,以便在使用Width
和单击它时使其更大Height
。
我的按钮 XAML 代码是这样的:
<Button x:Name="Input2" Grid.Row="0" MouseEnter="Input2_MouseEnter" MouseLeave="Input2_MouseLeave" Click="Input2_Click" Background="{x:Null}" BorderBrush="{x:Null}" Foreground="{x:Null}">
<Button.Template>
<ControlTemplate>
<Border HorizontalAlignment="Center" VerticalAlignment="Center" >
<Image Source= "C:\input.png"
Width="40"
Height="40"/>
</Border>
</ControlTemplate>
</Button.Template>
</Button>
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Input2.Height
- 更改按钮的大小,而不是按钮内的图像。
我的 C# 代码:
private void Input2_Click(object sender, RoutedEventArgs e)
{
// What to do here?
}
Run Code Online (Sandbox Code Playgroud) 需要得到符合这些参数的房屋数组
const houses = [
{id: 1, name: 'house1', floors: 2, balconies: 1, terrace: 'Y', veranda: 'N'},
{id: 2, name: 'house2', floors: 1, balconies: "N", terrace: 'N', veranda: 'Y'},
{id: 3, name: 'house3', floors: 3, balconies: 1, terrace: 'Y', veranda: 'N'},
{id: 4, name: 'house4', floors: 1, balconies: "N", terrace: 'N', veranda: 'Y'},
{id: 5, name: 'house5', floors: 1, balconies: "N", terrace: 'Y', veranda: 'N'},
{id: 6, name: 'house6', floors: 3, balconies: 2, terrace: 'N', veranda: 'N'},
{id: 7, name: …
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