灯角

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灯角 2024-11-08 08:41:04

这是因为您在查询的选择部分使用聚合函数,

要返回 10 条记录,您只需要查询中的 id 和 first_name 。

EG:

SELECT id, first_Name
FROM users

如果您想获取表中记录的计数,那么您可以使用

SELECT (Count(id))
FROM [users]

Its becuase you are using an aggregate function in the select part of the query,

to return the 10 records you just need the id, and first_name in the query.

EG:

SELECT id, first_Name
FROM users

if you wanted to get a count of the records in the table then you could use

SELECT (Count(id))
FROM [users]

将 count(*) 作为选择查询的一部分是否错误

灯角 2024-11-08 04:21:18

使用当前的 SDK 功能,您无法自动发送电子邮件(无需用户干预)。上面的代码旨在启动一个活动(屏幕),其中填写了电子邮件详细信息,并要求用户点击发送按钮。

With the current SDK capabilities, you cannot send emails automatically (without user intervention). The code above is intended to start an activity (screen) with the email details filled in and asking the user to hit the send button.

Android:无需谷歌登录即可发送电子邮件(自动发送邮件)

灯角 2024-11-08 03:35:35

尝试删除所有生成的文件并重建。我遇到过几次这样的错误,这通常会有所帮助。

try deleting all generated files and rebuilding. i had this sort of error a few times, and that usually helped.

扩展Android.app.application清单问题

灯角 2024-11-08 03:10:18

我发现这篇文章很有用: http://pro-cosmos.blogspot.com/2011/03/ phpstorm-mysql.html

我成功配置了 phpstorm 以使用 mysql,但我使用 "jdbc:mysql://localhost:3306 作为 url。

I found this article useful: http://pro-cosmos.blogspot.com/2011/03/phpstorm-mysql.html

I successfully configured phpstorm to work with mysql but I used "jdbc:mysql://localhost:3306 as url.

Mysql 与 Phpstorm IDE 的连接

灯角 2024-11-08 01:18:38

由于使用事件流的概念非常现代,因此在设计具有事件流的应用程序时,我正在努力寻找更宏观的最佳实践。

当然,身处前沿是很酷的事情,但这也意味着你必须在前进的过程中发现“正确的道路”!

因此,请记住 ISubject 既是 IObserver(发布部分),又是 IObservable(订阅部分) - 如果您的意图是您的方法的客户端应该是订阅者,则只给它们 IObservable 部分(即,将Subject 转换为 IObservable),如果您的方法的客户端应该是发布者,请为他们提供 IObserver 部分。

当您使用 Observable.CreateWithDisposable() 时,您会看到同样的事情,其中​​您得到的东西是 IObserver 位(因为您正在创建 IObservable,所以您的工作就是发布内容!)

Since the concept of working with event streams is pretty modern I'm struggeling to find best practices for the bigger picture when designing applications with event streams.

Definitely, it's cool to be on the frontier, but it also means you have to discover "the right way" as you go along!

So, remember that ISubject is both an IObserver (the Publish part), and an IObservable (the Subscribe part) - if your intent is that your method's clients should be Subscribers, only give them the IObservable part (i.e. cast Subject to IObservable), and if your method's clients should be Publishers, give them the IObserver part.

You see the same thing when you use Observable.CreateWithDisposable(), where the thing you're given is the IObserver bit (since you're creating an IObservable, your job is to publish stuff!)

可以将主题传递给组件吗

灯角 2024-11-08 00:06:00

看看你的“结构堆栈”,这就是结构的描述。
顶部的下一个循环是您的结构的一个实例。您似乎将两者混合在一起。
任何地方都不应该有任何“struct top”,它们应该是“struct stack”。

Look at your 'struct stack', thats the description of the structure.
Next loop at top, that's an instance of your structure. You appear to be mixing the both.
There shouldn't be any 'struct top' anywhere, they should be 'struct stack'.

表达式必须具有指针类型

灯角 2024-11-07 22:37:30

您必须对“elemento”调用 Measure。在测量期间,Silverlight 创建在 elemento 模板中声明的 UI 元素,因为需要实际测量并得出所需的尺寸。然后,您应该使用 elemento.DesiredSize.Width 和 Height 来为 panelDesiredSize 提供所需的尺寸。

You must call Measure on "elemento". It's during the Measure that Silverlight creates the UI elements declared in the elemento's template since they'll be needed to actually measure and come up with a desired size. You should then use the elemento.DesiredSize.Width and Height to come up with the desired size for your panelDesiredSize.

如何在 Silverlight 中使用 MeasureOverride?

灯角 2024-11-07 14:46:34

您肯定需要在 while 循环内移动 switch 语句(编辑:这是基于 OP 最初发布的代码)。

You definitely need to move the switch statement within the while loop (Edit: this was based on the OP's initial posting of the code).

C++ switch 语句计数输出

灯角 2024-11-07 13:10:05

关闭浏览器窗口不会破坏会话。
请查看:asp.net 中的会话处理,了解有关解决方法的更多信息。

Sessions are not destroyed by closing the browser window.
Take a look at: session Handling in asp.net to find out more about the workarounds.

ASP.NET MVC 会话在浏览器关闭时仍然处于活动状态

灯角 2024-11-07 11:44:26

我认为Android对OPP有支持。android/packages/apps/Bluetooth/...../opp/*.java中有一个路径

如果您的版本没有这个,我找到了一个有用的链接,将有助于在 Android 中使用 OBEX OPP。这里需要修改Android框架。

http://i -miss-erin.blogspot.in/2009/10/how-to-have-obex-function-in-android.html

i think there is support in Android for OPP.There is a path in android/packages/apps/Bluetooth/...../opp/*.java

If your version doesnot have this, i found a useful link that will help to use OBEX OPP in android. Android framework modification is needed here.

http://i-miss-erin.blogspot.in/2009/10/how-to-have-obex-function-in-android.html

使用蓝牙 OBEX 对象推送配置文件 (OPP) 发送文件

灯角 2024-11-07 10:00:22

这应该可以帮助您开始,但是您的 WHERE 子句需要工作。

SET QUOTED_IDENTIFIER OFF 
GO
SET ANSI_NULLS ON 
GO
SET ANSI_PADDING ON
GO
SET NOCOUNT ON
GO


IF  EXISTS (SELECT * FROM sys.objects WHERE object_id = OBJECT_ID(N'[dbo].[theSprocName]') AND type in (N'P', N'PC'))
DROP PROCEDURE [dbo].[theSprocName]
GO

CREATE PROCEDURE dbo.theSprocName

    @brand varchar(250)      -- change to suit the anticipated width.

AS

BEGIN

    SELECT SomeField1, SomeField2
    FROM cars
    -- specify what criteria to filter by.
    -- WHERE cars.brand 

END
GO

This should get you started, but your WHERE clause needs work.

SET QUOTED_IDENTIFIER OFF 
GO
SET ANSI_NULLS ON 
GO
SET ANSI_PADDING ON
GO
SET NOCOUNT ON
GO


IF  EXISTS (SELECT * FROM sys.objects WHERE object_id = OBJECT_ID(N'[dbo].[theSprocName]') AND type in (N'P', N'PC'))
DROP PROCEDURE [dbo].[theSprocName]
GO

CREATE PROCEDURE dbo.theSprocName

    @brand varchar(250)      -- change to suit the anticipated width.

AS

BEGIN

    SELECT SomeField1, SomeField2
    FROM cars
    -- specify what criteria to filter by.
    -- WHERE cars.brand 

END
GO

需要全文搜索示例

灯角 2024-11-07 08:15:13
const number = Number(Number(value).toFixed(t));

有了这个,您可以将数字转换为正确的小数位数,并且在转换回数字时,去掉所有无用的零。

const number = Number(Number(value).toFixed(t));

With this you can cast your number to the correct amount of decimal places and, when converting back to Number, get rid of all useless zeros.

如何将数字格式化为小数点后两位,但前提是已经有小数位?

灯角 2024-11-07 06:16:54

这是一个很棒的链接,它演示了所有步骤: 使用 jQuery 来使用 ASP.NET JSON Web 服务

Here is a great link that walks through all the steps: Using jQuery to Consume ASP.NET JSON Web Services

如果我创建了 ASP.NET Web 应用程序,如何使用 AJAX 调用 WebService?

灯角 2024-11-07 05:25:23

遵循正则表达式对我来说效果很好。

\/\/.*

Following regular expression works just fine for me.

\/\/.*

如何在 C 中使用 REGEX // ?单行注释

灯角 2024-11-06 21:34:42

对于 1.10 版本,请将此代码添加到选项中的 javascript 中。
initComplete 覆盖搜索方法并等待写入 3 个字符。
感谢 http://webteamalpha.com/triggering- datatables-to-search-only-on-enter-key-press/ 为我提供了线索。

    var dtable= $('#example').DataTable( {
        "deferRender": true,
        "processing": true,
        "serverSide": true,


        "ajax": "get_data.php",
        "initComplete": function() {
            var $searchInput = $('div.dataTables_filter input');

            $searchInput.unbind();

            $searchInput.bind('keyup', function(e) {
                if(this.value.length > 3) {
                    dtable.search( this.value ).draw();
                }
            });
        }

    } );
} );

for 1.10 version add this code to your javascript in the options.
The initComplete overrides the search method and wait to 3 characters are written.
Thanks to http://webteamalpha.com/triggering-datatables-to-search-only-on-enter-key-press/ for giving me the light.

    var dtable= $('#example').DataTable( {
        "deferRender": true,
        "processing": true,
        "serverSide": true,


        "ajax": "get_data.php",
        "initComplete": function() {
            var $searchInput = $('div.dataTables_filter input');

            $searchInput.unbind();

            $searchInput.bind('keyup', function(e) {
                if(this.value.length > 3) {
                    dtable.search( this.value ).draw();
                }
            });
        }

    } );
} );

jQuery DataTables:延迟搜索,直到输入 3 个字符或单击按钮

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