走过海棠暮

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走过海棠暮 2024-09-05 18:20:29

模板根据模板参数实例化新类型,这是在编译时完成的。您无法在运行时实例化新类型,因为 C++ 是静态类型的。

因此,当您有一个非常量变量时​​,它不能作为模板参数传递,因为不能保证它是该值(您必须“在运行时实例化一个新类型”)。只有当它是 const 时,您才能确保该值确实是常量,因此可以在模板参数中使用。

Templates instantiate new types based off their template parameters, which is done at compile-time. You cannot instantiate new types at run-time, because C++ is statically-typed.

So when you have a non-const variable, it can't be passed as a template parameter because it can't be guaranteed to be that value (you'd have to potentially "instantiate a new type at run-time"). Only when it's const are you ensured the value is indeed constant, and therefore usable in a template parameter.

为什么模板声明中的 size_t 参数需要是 const ?

走过海棠暮 2024-09-05 16:19:52

替代文本

我尝试将字典从 WCF 发送到 Silverlight,我可以在调试器中看到数据。所以它也应该适合你。也许你的代码有什么问题?

您到底使用什么“日期”类?请像我一样尝试使用 DateTime 。

这是我的服务器端代码:

public Dictionary<DateTime, decimal> GetDataUsingDataContract()
{
    Dictionary<DateTime, decimal> x = new Dictionary<DateTime, decimal>();
    x[DateTime.Now] = 2;
    x[DateTime.Now.AddDays(2)] = 3;
    return x;
}

alt text

I tried to send Dictionary from WCF to Silverlight and I can see the data in the debugger. So it should work fine for you too. Maybe there's something about your code?

What exactly "Date" class are you using? Please try DateTime instead as I did.

Heres' my server side code:

public Dictionary<DateTime, decimal> GetDataUsingDataContract()
{
    Dictionary<DateTime, decimal> x = new Dictionary<DateTime, decimal>();
    x[DateTime.Now] = 2;
    x[DateTime.Now.AddDays(2)] = 3;
    return x;
}

Silverlight调试,无列表元素视图

走过海棠暮 2024-09-05 16:14:27

处理事件怎么样?

每次修改第一个列表视图中的项目(添加/删除项目)时,都会引发一个事件。

在事件处理程序中,您只需重新计算所有所需的值并将它们放置在第二个列表视图中。

How about working with events?

You throw an event everytime an item in the first Listview is modified, are an item is added/removed.

In the event handler you simple recalculate all the wanted values and place them in the second listview.

如何将一个列表视图链接到另一个列表视图以创建足球联赛表?

走过海棠暮 2024-09-05 15:26:11

您是否尝试过从 System.Web.SessionState.IRequiresSessionState 继承 webservice 类?

它通常用于 http 处理程序,但 Web 服务似乎使用相同的标记接口。

Have you tried inheriting your webservice class from System.Web.SessionState.IRequiresSessionState ?

It's normally used for http handlers, but webservices seem to use the same marker interface.

Web服务和asp.net应用程序之间共享会话

走过海棠暮 2024-09-05 14:44:07

您正在创建一个别名 P ,稍后在 where 子句中使用相同的别名,这就是造成问题的原因。不要在 where 中使用 P,而是尝试这样做:

SELECT Replace(Postcode, ' ', '') AS P FROM Contacts
WHERE Postcode LIKE 'NW101%'

You are creating an alias P and later in the where clause you are using the same, that is what is creating the problem. Don't use P in where, try this instead:

SELECT Replace(Postcode, ' ', '') AS P FROM Contacts
WHERE Postcode LIKE 'NW101%'

使用 Replace() 进行选择

走过海棠暮 2024-09-05 13:38:16

有什么问题吗?教义需要 5.2.3,你有 5.2.11。

11> 3、不是吗?

它会起作用...

我认为您只是将“5.2.11”与“5.2.1.1”(甚至不存在)混淆了。

What's the problem? Doctrine needs 5.2.3, you have 5.2.11.

11 > 3, isn't it?

It will work ...

I think you just confused "5.2.11" with "5.2.1.1" (which doesn't even exist).

与mamp的学说?

走过海棠暮 2024-09-05 13:28:28

这似乎成功了。

[theTableView scrollToRowAtIndexPath:[NSIndexPath indexPathForRow:savedScrollPosition inSection:0] atScrollPosition:UITableViewScrollPositionTop animated:NO];
CGPoint point = theTableView.contentOffset;
point .y -= theTableView.rowHeight;
theTableView.contentOffset = point;

This seemed to do the trick.

[theTableView scrollToRowAtIndexPath:[NSIndexPath indexPathForRow:savedScrollPosition inSection:0] atScrollPosition:UITableViewScrollPositionTop animated:NO];
CGPoint point = theTableView.contentOffset;
point .y -= theTableView.rowHeight;
theTableView.contentOffset = point;

UITableView滚动到特定位置

走过海棠暮 2024-09-05 11:37:02

试试这个。这是一个黑客解决方案,但它可以。

任何类加载器中的classes 字段(自 1.0 起在 Sun 的 impl 下)都保存对加载器定义的类的硬引用,因此它们不会被 GC 回收。您可以通过反思受益。

Field f = ClassLoader.class.getDeclaredField("classes");
f.setAccessible(true);

ClassLoader classLoader = Thread.currentThread().getContextClassLoader();
Vector<Class> classes =  (Vector<Class>) f.get(classLoader);

Try this. It's a hackerish solution but it will do.

The field classes in any classloader (under Sun's impl since 1.0) holds hard reference to the classes defined by the loader so they won't be GC'd. You can take a benefit from via reflection.

Field f = ClassLoader.class.getDeclaredField("classes");
f.setAccessible(true);

ClassLoader classLoader = Thread.currentThread().getContextClassLoader();
Vector<Class> classes =  (Vector<Class>) f.get(classLoader);

如何列出特定类加载器中加载的所有类

走过海棠暮 2024-09-05 09:52:42

你看过 Selenium

Have you looked at Selenium

最好的自动化 Web QA 工具有哪些?

走过海棠暮 2024-09-05 09:48:47

我已经尝试过私有和受保护的 get 访问器,但除非访问器是公共的,否则覆盖不会编译。

“属性或索引器不能在此上下文中使用,因为它缺少 get 访问器”

I've tried both a private and protected get accessor but the override won't compile unless the accessor is public.

"The property or indexer cannot be used in this context because it lacks the get accessor"

如何使用 Fluent Nhibernate 的 AutoPersistenceModel 忽略组件的属性?

走过海棠暮 2024-09-05 08:30:10

在工作目录中上传是可以的,但是,同时在数据库中上传是注意工作的,有人可以解决这个问题吗?亲切地。

函数 doInsert(){
if(isset($_POST['保存'])){
if ( $_POST['BRANCHNAME'] == "" || $_POST['BRANCHLOCATION'] == "" || $_POST['BRANCHCONTACTNO'] == "" ) {
$messageStats = false;
message("所有字段均为必填!","错误");
重定向('index.php?view=add');
}其他{
$branch = 新分支();
$branch->BRANCHNAME = $_POST['BRANCHNAME'];
$branch->BRANCHLOCATION = $_POST['BRANCHLOCATION'];
$branch->BRANCHCONTACTNO = $_POST['BRANCHCONTACTNO'];
$branch->BRANCHLEVEL = $_POST['BRANCHLEVEL'];
$branch->BRANCHSTATUS = $_POST['BRANCHSTATUS'];
$branch->BRANCHMANAGER = $_POST['BRANCHMANAGER'];
$branch->BRANCHDESCRIPTION = $_POST['BRANCHDESCRIPTION'];
//$branch->PICLOCATION = $_POST['PICLOCATION'];

        $branch->_FILES       = $_POST['PICLOCATION'];

        $file =$_FILES['PICLOCATION'];

        $filename = $file['name'];
        $filepath = $file['tmp_name'];
        $fileerror = $file['error'];

        if ($fileerror == 0) {
            $destfile = 'photos/'.$filename;
            move_uploaded_file($filepath, $destfile);


        
        

        $branch->LATITUDE                       = $_POST["LATITUDE"];
        $branch->LONGITUDE                      = $_POST["LONGITUDE"];
        $branch->create();

        message("New Branch created successfully!", "success");
        redirect("index.php");
        
    }
    }

}
}

In the working directory is fine work upload but, uploading in the database at the same time is note working any one solve this problem? kindly.

function doInsert(){
if(isset($_POST['save'])){
if ( $_POST['BRANCHNAME'] == "" || $_POST['BRANCHLOCATION'] == "" || $_POST['BRANCHCONTACTNO'] == "" ) {
$messageStats = false;
message("All field is required!","error");
redirect('index.php?view=add');
}else{
$branch = New Branch();
$branch->BRANCHNAME = $_POST['BRANCHNAME'];
$branch->BRANCHLOCATION = $_POST['BRANCHLOCATION'];
$branch->BRANCHCONTACTNO = $_POST['BRANCHCONTACTNO'];
$branch->BRANCHLEVEL = $_POST['BRANCHLEVEL'];
$branch->BRANCHSTATUS = $_POST['BRANCHSTATUS'];
$branch->BRANCHMANAGER = $_POST['BRANCHMANAGER'];
$branch->BRANCHDESCRIPTION = $_POST['BRANCHDESCRIPTION'];
//$branch->PICLOCATION = $_POST['PICLOCATION'];

        $branch->_FILES       = $_POST['PICLOCATION'];

        $file =$_FILES['PICLOCATION'];

        $filename = $file['name'];
        $filepath = $file['tmp_name'];
        $fileerror = $file['error'];

        if ($fileerror == 0) {
            $destfile = 'photos/'.$filename;
            move_uploaded_file($filepath, $destfile);


        
        

        $branch->LATITUDE                       = $_POST["LATITUDE"];
        $branch->LONGITUDE                      = $_POST["LONGITUDE"];
        $branch->create();

        message("New Branch created successfully!", "success");
        redirect("index.php");
        
    }
    }

}
}

php 图片上传

走过海棠暮 2024-09-05 03:39:33

除了已经提到的之外,TeXniccenter v2(目前处于测试阶段)和 TeXworks 都是原生的 Unicode TeX 编辑器。

In addition to those already mentioned, TeXniccenter v2 (currently in beta) and TeXworks are both natively Unicode TeX editors.

适用于 Windows 的 Latex 编辑器,可与 unicode 配合使用

走过海棠暮 2024-09-05 02:46:25

下面是它的扩展方法示例:

public static List<int> AllIndexesOf(this string str, string value) {
    if (String.IsNullOrEmpty(value))
        throw new ArgumentException("the string to find may not be empty", "value");
    List<int> indexes = new List<int>();
    for (int index = 0;; index += value.Length) {
        index = str.IndexOf(value, index);
        if (index == -1)
            return indexes;
        indexes.Add(index);
    }
}

如果将其放入静态类中并使用 using 导入命名空间,则它会显示为任何字符串上的方法,您可以执行以下操作:

List<int> indexes = "fooStringfooBar".AllIndexesOf("foo");

有关扩展的更多信息方法,http://msdn.microsoft.com/en-us/library/bb383977 .aspx

使用迭代器也一样:

public static IEnumerable<int> AllIndexesOf(this string str, string value) {
    if (String.IsNullOrEmpty(value))
        throw new ArgumentException("the string to find may not be empty", "value");
    for (int index = 0;; index += value.Length) {
        index = str.IndexOf(value, index);
        if (index == -1)
            break;
        yield return index;
    }
}

Here's an example extension method for it:

public static List<int> AllIndexesOf(this string str, string value) {
    if (String.IsNullOrEmpty(value))
        throw new ArgumentException("the string to find may not be empty", "value");
    List<int> indexes = new List<int>();
    for (int index = 0;; index += value.Length) {
        index = str.IndexOf(value, index);
        if (index == -1)
            return indexes;
        indexes.Add(index);
    }
}

If you put this into a static class and import the namespace with using, it appears as a method on any string, and you can just do:

List<int> indexes = "fooStringfooBar".AllIndexesOf("foo");

For more information on extension methods, http://msdn.microsoft.com/en-us/library/bb383977.aspx

Also the same using an iterator:

public static IEnumerable<int> AllIndexesOf(this string str, string value) {
    if (String.IsNullOrEmpty(value))
        throw new ArgumentException("the string to find may not be empty", "value");
    for (int index = 0;; index += value.Length) {
        index = str.IndexOf(value, index);
        if (index == -1)
            break;
        yield return index;
    }
}

在 C# 中查找较大字符串中子字符串的所有位置

走过海棠暮 2024-09-04 19:54:34

Silverlight-Controlkit 附带了一个非常方便的“忙碌指示器”控件...太糟糕了,默认情况下 WPF 似乎没有这样的东西。

但我发现这对你来说似乎是相当的控制:
http:// /sweux.com/blogs/pombeiro/index.php/2009/12/01/a-busy-state-indicator-attached-behavior/

下载源:
http://gallery.expression.microsoft.com/en-us/BusyIndi​​cator

Silverlight-Controlkit comes with a very handy "busyindicator"-control... too bad there seems to be no such thing for WPF by default.

But I found this seemfully comparable control for you:
http://sweux.com/blogs/pombeiro/index.php/2009/12/01/a-busy-state-indicator-attached-behavior/

download-source:
http://gallery.expression.microsoft.com/en-us/BusyIndicator

ac# wpf 列表框的加载屏幕

走过海棠暮 2024-09-04 16:57:23

另一种选择是从控制器操作返回格式化字符串。您甚至可以保留时间戳并返回第二个字段作为“格式化时间戳”或类似的内容。

var listFromDb = ...
return new Json(listFromDb.Select(itemFromDb => new List { new 
     { Date = itemFromDb.Date, FormattedDate = FormatDate(itemFromDb.Date), ...}

The other alternative is to return the formatted string from the controller action. You could even leave the timestamp and return a second field as "Formatted Timestamp" or something similar.

var listFromDb = ...
return new Json(listFromDb.Select(itemFromDb => new List { new 
     { Date = itemFromDb.Date, FormattedDate = FormatDate(itemFromDb.Date), ...}

使用 javascript/jquery 从数据库格式化日期的正确方法

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