我在viewDidLoad中使用下面的代码调用方法sr,如何在sr调用的方法之前取消它?
[self performSelector:@selector(sr) withObject:nil afterDelay:20];
Run Code Online (Sandbox Code Playgroud) 我想启动SQL Server代理(sql server 2008 R2企业版),然后我做了:
但是当我右键单击开始项目时,禁用.
我用它[self.view.layer removeAllAnimations];来暂停动画.但xcode说
警告:未找到"-removeAllAnimations"方法
为什么?
我可以在AppDelegate以外的地方使用以下方法吗?如果是的话怎么样?
- (void)applicationDidEnterBackground:(UIApplication *)application
Run Code Online (Sandbox Code Playgroud) 我使用下面的代码进行摇动按钮如何在正在进行时取消它?
#define RADIANS(degrees) ((degrees * M_PI) / 180.0)
CGAffineTransform leftWobble = CGAffineTransformRotate(CGAffineTransformIdentity, RADIANS(-10.0));
CGAffineTransform rightWobble = CGAffineTransformRotate(CGAffineTransformIdentity, RADIANS(10.0));
btn.transform = leftWobble; // starting point
[UIView beginAnimations:@"wobble" context:btn];
[UIView setAnimationRepeatAutoreverses:YES]; // important
[UIView setAnimationRepeatCount:20];
[UIView setAnimationDuration:0.1];
[UIView setAnimationDelegate:self];
[UIView setAnimationDidStopSelector:@selector(wobbleEnded:finished:context:)];
btn.transform = rightWobble; // end here & auto-reverse
[UIView commitAnimations];
Run Code Online (Sandbox Code Playgroud) 我在viewLoad中使用下面的代码(我不想画画- (void)drawRect:(CGRect)rect)在视图上添加rect但是不起作用.为什么?
CGRect rect=CGRectMake(10,10,150,140);
CGContextRef context = UIGraphicsGetCurrentContext();
CGFloat red[4] = {1.0f, 0.0f, 0.0f, 1.0f};
CGContextSetStrokeColor(context, red);
CGContextBeginPath(context);
CGContextMoveToPoint(context, 10, 10);
CGContextAddRect(context, rect);
CGContextStrokePath(context);
Run Code Online (Sandbox Code Playgroud) 是否可以在WinForms中以特定角度旋转按钮或任何控件?如果是这样,怎么样?
我尝试在我的应用程序中使用 saga 但出现以下错误,我检查了有关此主题的几篇文章,但无法解决问题
(0,redux Saga.createSagaMiddleWare) 不是一个函数
中间件.js:
import {createSagaMiddleware} from 'redux-saga'
export const sagaMiddleware = createSagaMiddleware();
export default sagaMiddleware
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商店.js:
import { createStore, applyMiddleware } from 'redux'
import reducer from '../_reducers'
import sagaMiddleware from './middleware'
export default createStore(reducer,applyMiddleware(sagaMiddleware));
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应用程序.js:
...
class App extends React.Component {
render() {
return (
<Provider store={ store } >
...
</Provider>
);
}
}
export default App
sagaMiddleware.run(saga)
Run Code Online (Sandbox Code Playgroud) 我想用Newtonsoft Json.NET解析一块JSON
JSON:
[{
"type": "switchStatus",
"Data" :[
{
"ID" : "1",
"value" : "2.5"
},
{
"ID" : "2",
"value" : "4.2"
}
],
"Datetime": "2014-12-01",
"customerID": "50"
}]
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类别:
public class Account
{
[JsonProperty("type")]
public string Type { get; set; }
public List<Data> Data { get; set; }
[JsonProperty("Datetime")]
public string DateTime { get; set; }
[JsonProperty("customerID")]
public string CustomerId { get; set; }
}//Account
public class Data
{
[JsonProperty("ID")]
public string Id { get; set; } …Run Code Online (Sandbox Code Playgroud) 我有一个有多个控制器的 web-api 项目,我为其实现了本地化(英语和韩语),但希望一两个控制器以英语返回消息,即使语言是韩语(不想使用简单的英语消息并希望从英文资源中阅读)
是否可以?
我设置本地化如下:
services.Configure<RequestLocalizationOptions>(options =>
{
var cultures = new List<CultureInfo> {
new CultureInfo("en"),
new CultureInfo("kr")
};
options.DefaultRequestCulture = new Microsoft.AspNetCore.Localization.RequestCulture("en");
options.SupportedCultures = cultures;
options.SupportedUICultures = cultures;
});
services.AddMvc().AddDataAnnotationsLocalization(options =>
{
options.DataAnnotationLocalizerProvider = (type, factory) =>factory.Create(typeof(SharedTranslate));
});
services.AddLocalization(o =>
{
o.ResourcesPath = "Resources";
});
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并在构造函数中:
public AuthAdminController(IStringLocalizer<SharedTranslate> localizer,...
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我在控制器的构造函数中使用下面的代码但没有工作
//First
System.Threading.Thread.CurrentThread.CurrentCulture = new System.Globalization.CultureInfo("en-US");
//Second
System.Threading.Thread.CurrentThread.CurrentCulture = System.Globalization.CultureInfo.CreateSpecificCulture("en");
Run Code Online (Sandbox Code Playgroud) 我有几个txt文件,每个文件包含超过300万行。每行包含客户的连接,其中有客户 ID、IP 地址......
我需要找到特定的 IP 地址并获取与其相关的客户 ID。
我读取该文件并将其拆分为一个数组,并通过 foreach 在每一行中进行搜索,但由于有很多行,因此出现以下错误。
引发了“System.OutOfMemoryException”类型的异常。
我应该解压缩 txt 文件,因为它们是压缩的。我使用下面的代码:
string decompressTxt = decompressTxt = this.Decompress(new FileInfo(filePath));
char[] delRow = { '\n' };
string[] rows = decompressTxt.Split(delRow);
for (int i = 0; i < rows.Length; i++){
if(rows[i].Contains(ip)){
}
}
string Decompress(FileInfo fileToDecompress)
{
string newFileName = "";
string newFIleText = "";
using (FileStream originalFileStream =fileToDecompress.OpenRead())
{
string currentFileName = fileToDecompress.FullName;
newFileName = currentFileName.Remove(currentFileName.Length - fileToDecompress.Extension.Length);
using (FileStream decompressedFileStream = File.Create(newFileName))
{
using (GZipStream decompressionStream = new …Run Code Online (Sandbox Code Playgroud)