我正在尝试过滤多个条件,但我看到"过滤器"选项只有2个字段用于"AND/OR"选项.我有一个充满链接的专栏.我想提取其中包含这些行的所有行:
.pdf .doc .docx .xls .xlsx .rtf .txt .csv .pps
有没有办法做到这一点?
我有一个复杂的JSON对象,我想表示为C#类.我在名为"Form"的父类上有一个良好的开端,但是我如何表示不同类型的集合(请参阅下面的"元素"对象)?
这是JSON对象:
{
"action": "index.html",
"method": "post",
"elements":
[
{
"type": "fieldset",
"caption": "User information",
"elements":
[
{
"name": "email",
"caption": "Email address",
"type": "text",
"placeholder": "E.g. user@example.com",
"validate":
{
"email": true
}
},
{
"name": "password",
"caption": "Password",
"type": "password",
"id": "registration-password",
"validate":
{
"required": true,
"minlength": 5,
"messages":
{
"required": "Please enter a password",
"minlength": "At least {0} characters long"
}
}
},
{
"name": "password-repeat",
"caption": "Repeat password",
"type": "password",
"validate":
{
"equalTo": "#registration-password",
"messages":
{
"equalTo": …Run Code Online (Sandbox Code Playgroud) 我有一个现有的服务,如下面的方法:
[AspNetCompatibilityRequirements(RequirementsMode = AspNetCompatibilityRequirementsMode.Allowed)]
[ServiceBehavior(AddressFilterMode = AddressFilterMode.Any)]
public class SomeService : ISomething
{
public SomeListResults SomeList(SomeParams someParams)
{
....
}
}
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是否有一种简单的方法可以同时允许JSONP调用和JSON(检测它).这是原生的吗?
我使用的是.NET 3.5,需要将下面的select new结果转换为DataTable.是否有内置的东西或任何人知道的方法可以做到这一点?
var contentList = (from item in this.GetData().Cast<IContent>()
select new
{
Title = item.GetMetaData("Title"),
Street = item.GetMetaData("Street"),
City = item.GetMetaData("City"),
Country = item.GetMetaData("Country")
});
Run Code Online (Sandbox Code Playgroud) 在NuGet中,您可以将readme.txt放在pacakge的根目录中,它将自动打开.但是,我看到NuGet包在安装时打开了一个URL.这是怎么做的(你可以看看这个NuGet包的一个例子).
我遇到了一个对我不熟悉的for循环.method这个for循环意味着什么?
for method, config in self.myList.items():
我正在尝试CLLocationManagerDelegate通过协议扩展来实现协议要求,但位置管理器在协议扩展中没有看到它并且失败.但是,当移动到类中时,它使用相同的代码.
这是我正在做的事情:
class ViewController: UIViewController, MyLocationProtocol {
let locationManager = CLLocationManager()
override func viewDidLoad() {
super.viewDidLoad()
locationManager.desiredAccuracy = kCLLocationAccuracyThreeKilometers
locationManager.distanceFilter = 1000.0
locationManager.delegate = self
// Below crashes when implementation in protocol extension
locationManager.requestLocation()
}
}
protocol MyLocationProtocol: CLLocationManagerDelegate {
func locationManager(manager: CLLocationManager, didUpdateLocations locations: [CLLocation])
func locationManager(manager: CLLocationManager, didFailWithError error: NSError)
}
extension MyLocationProtocol /*where Self: UIViewControll*/ { // Tried using where clause but still no go :(
// Not being triggered by CLLocationManagerDelegate! :(
// Move …Run Code Online (Sandbox Code Playgroud) 我可以比较2个字典是否匹配:
func ==(lhs: [String: AnyObject], rhs: [String: AnyObject] ) -> Bool {
return NSDictionary(dictionary: lhs).isEqualToDictionary(rhs)
}
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是否有一种简洁的方法来提取2个字典之间的差异,就像在交叉点的对面?
我的应用程序在运行时更改语言,并建议用户重新启动应用程序.我是这样做的:
typealias LanguageLocaleType = (language: String?, locale: String?, title: String)
let elements: [LanguageLocaleType] = [
(nil, nil, "System Default"),
("en", "en_US", "English"),
("ar", "ar_SA", "Arabic"),
]
//...func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath)...
let element = elements[indexPath.row]
guard let language = element.language else {
// How to really reset app back to OS language/locale???
UserDefaults.standard.removeObject(forKey: "AppleLanguages")
UserDefaults.standard.removeObject(forKey: "AppleLocale")
return
}
UserDefaults.standard.set([language], forKey: "AppleLanguages")
if let locale = element.locale, !locale.isEmpty,
Locale.current.identifier != locale,
!Locale.current.identifier.hasPrefix("\(language)_") {
UserDefaults.standard.set(locale, forKey: "AppleLocale")
}
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我想提供在列表中设置语言并选择正确的语言,其中一个语言被提供给语言设置System …
在 SwiftUI 中,我使用的Picker是这样的默认值:
Picker("Choose option", selection: $selectedRateID) {
ForEach(model.rates, id: \.id) {
Text($0.title).tag($0.id)
}
}
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选择器呈现为:
当我尝试选择一个选项时,详细信息屏幕如下所示:
有没有办法让选择器选项详细信息屏幕使用InsetGroupedListStyle如下所示:
我尝试添加.listStyle(InsetGroupedListStyle())到ForEach、Picker、 和其他节点,但它不起作用。关于如何实现这一目标有什么想法吗?(为什么上面有这么多空间却没有标题?)
c# ×3
swift ×3
.net ×2
asp.net ×2
ios ×2
json ×2
swift2 ×2
wcf ×2
dataset ×1
dictionary ×1
excel ×1
excel-2007 ×1
for-loop ×1
jsonp ×1
linq ×1
localization ×1
nsdictionary ×1
nslocale ×1
nuget ×1
picker ×1
python ×1
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