走过海棠暮

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走过海棠暮 2024-10-27 00:35:03

您想要实施屏幕保护程序吗?或者您知道屏幕保护程序如何在计算机锁定时运行吗?在 XP 上有一个单独的桌面,当计算机锁定时,该桌面由 GINA(在 winlogon 进程中运行的 DLL)激活。

要实现屏幕保护程序,请根据 MSDN 上的规范实现 ScreenSaverConfigureDialogScreenSaverProc,并以这些名称导出这些函数(即使用 .def 文件来获得不带名称的名称)。装饰),然后将创建的 DLL 命名为 .scr。

Do you want to implement a screen saver or do you know how the screen saver can run while the machine is locked? On XP there is a separate desktop for this, which gets activated by the GINA (a DLL running in the winlogon process) when the machine is locked.

To implement a screen saver, implement ScreenSaverConfigureDialog and ScreenSaverProc according to the specifications over at MSDN, export those functions under these names (i.e. use a .def file to have the names without decoration) and name the created DLL .scr afterwards.

窗口锁定时屏幕保护程序如何工作

走过海棠暮 2024-10-26 21:48:28

此处回答了这个问题。

使用 InheritanceManager 中的 django-model-utils 项目。

This question was answered here.

Use the InheritanceManager from the django-model-utils project.

在django中获取继承的模型对象

走过海棠暮 2024-10-26 18:46:13

我尝试了一切,但最后这个 jquery 起作用了,特别是如果你想等待光标悬停在所有元素上,包括按钮和链接。

在 Angular .ts 文件顶部定义

declare var $: any;

然后在您想要等待光标的位置:

$('*').css('cursor','wait' );

并删除等待:

$('*').css('cursor','auto');

I tried everything but finally this jquery worked, especially if you want wait cursor over all elements including buttons and links.

define at the top of angular .ts file

declare var $: any;

and then where ever you want wait cursor:

$('*').css('cursor','wait');

and remove wait:

$('*').css('cursor','auto');

JavaScript 光标更改(并再次更改回来)

走过海棠暮 2024-10-26 13:40:38

迁移后:
迁移过程非常顺利。没有任何问题。只需升级项目即可完成。

After the migration:
The migration went really smooth. No hickups whatsoever. Simply upgrade the project and your done.

将 Entity Framework 1 项目升级到 EF 4

走过海棠暮 2024-10-26 11:35:51
  1. 元胞数组可以有多个维度,因此它们可以像其他索引一样使用多个下标进行索引 多维数组。语法 {3,8} 正在索引一个(可能是)二维元胞数组,获取第三行第八列中的元胞内容。

  2. 使用元胞数组有两个主要原因:存储不同类型的数据或存储不同大小的数据。假设示例中的 x 和 y 是标量索引,则 cellArr 是一个元胞数组,其中元胞由 x 索引> 包含另一个元胞数组,其由 y 索引的元胞包含一个存储顶点标签的二维元胞数组。

    现在,如果您的顶点标签都是相同的数据类型并且都只是单个非空(即不是[])值,那么最低级别的二维元胞数组可以转换为二维数值数组,您的索引将如下所示:

    cellArr{x}{y}(3,8) = 1.0; %# 注意使用 () 而不是 {}
    

    现在的问题是如何处理由 xy 索引的两组封闭元胞数组。如果可以通过 y 索引的每个单元格都包含大小和类型相同的二维数值数组,则该单元格数组可以转换为 3D 数值数组可以像这样索引的数组:

    cellArr{x}(3,8,y) = 1.0; %# 这里我选择使用 y 作为第三个维度
    

    最后,如果可以通过 x 索引的每个单元格都包含同样大小和类型相同的 3-D 数值数组,则 cellArr 可以转换为 4-D 数值数组,可以像这样进行索引:

    numArr(3,8,y,x) = 1.0;
    

    您可以根据自己的喜好更改下标的顺序(即 numArr 的尺寸),但我将 xy 放在因此,如果您要索引顶点标签的子数组,例如 numArr(:,:,y,x) ,它将以二维数组的形式返回。如果您对索引进行了排序,以便对顶点标签的子数组进行索引,例如 numArr(x,y,:,:),它将以 4 维数组的形式返回结果,其中包含两个主要的单例维度(您必须使用 SQUEEZE 等函数删除它们)。

  1. Cell arrays can have multiple dimensions, and thus they can be indexed with multiple subscripts like any other multidimensional array. The syntax {3,8} is indexing a (presumably) 2-D cell array, getting the contents of the cell in the third row and eighth column.

  2. There are two main reasons to use cell arrays: storing data of different types or storing data of different sizes. Assuming x and y are scalar indices in your example, then cellArr is a cell array with the cell indexed by x containing another cell array, whose cell indexed by y contains a 2-D cell array which stores your vertex labels.

    Now, if your vertex labels are all the same data type and are all just single non-empty (i.e. not []) values, then the 2-D cell array at the lowest level could be turned into a 2-D numeric array, and your indexing will look like this:

    cellArr{x}{y}(3,8) = 1.0;  %# Note the use of () instead of {}
    

    The question now becomes how to handle the two enclosing sets of cell arrays indexed by x and y. If every cell that can be indexed by y contains 2-D numeric arrays all of the same size and type, then that cell array could be turned into a 3-D numeric array that could be indexed like so:

    cellArr{x}(3,8,y) = 1.0;  %# Here I've chosen to use y as the third dimension
    

    Finally, if every cell that can be indexed by x contains 3-D numeric arrays that are again all of the same size and type, then cellArr could be turned into a 4-D numeric array that could be indexed like so:

    numArr(3,8,y,x) = 1.0;
    

    You could change the order of the subscripts (i.e. the dimensions of numArr) to your liking, but I put x and y at the end so that if you were to index a subarray of vertex labels like numArr(:,:,y,x) it will return it as a 2-D array. If you had the indices ordered such that you would index a subarray of vertex labels like numArr(x,y,:,:), it will return the result as a 4-D array with ones for the two leading singleton dimensions (which you would have to remove using functions like SQUEEZE).

元胞数组语法

走过海棠暮 2024-10-26 08:49:05

我发现最快的方法是在命令行上检查 Android 调试桥。有时,只需停止并启动 adb 服务器即可。即:

adb Kill-server

将停止服务器。然后:

adb start-server

就可以了。检查连接的设备(但这不是必需的)

adb devices

,它列出了连接的设备。
然后回到eclipse再次开始调试。

这也可以通过 Eclipse 在设备视图中完成。

I've found that the quickest way is to check with the Android Debug Bridge on the command line. Sometimes all it takes is stopping and starting the adb server. That is:

adb kill-server

Will stop the server. Then:

adb start-server

That should do it. Check the attached devices ( but it's not necessary )

adb devices

and it lists the devices attached.
Then go back to eclipse and start debugging again.

This can also be done in the Devices view through Eclipse.

尝试启动 Android 应用程序时 Eclipse 被卡住

走过海棠暮 2024-10-26 05:44:31

您可以使用robots.txt文件来阻止爬虫的访问,也可以使用javascript来检测浏览器代理,并据此进行切换。如果我理解第一个选项更合适,那么:

User-agent: *
Disallow: /

将其另存为站点根目录下的 robots.txt,并且任何自动化系统都不应检查您的站点。

You can use the robots.txt file to block access to crawlers, or you can use javascript to detect the browser agent, and switch based on that. If I understood the first option is more appropriate, so:

User-agent: *
Disallow: /

Save that as robots.txt at the site root, and no automated system should check your site.

如何检查我的网站是否被爬虫访问?

走过海棠暮 2024-10-25 21:02:43

空目录应该只有两个链接(. 和 ..)。在 OSX 上,这可以工作:

File.stat('directory').nlink == 2

...但在 Linux 或 Cygwin 上不起作用。 (感谢@DamianNowak)改编潘的答案:

Dir.entries('directory').size == 2

应该有效。

An empty directory should only have two links (. and ..). On OSX this works:

File.stat('directory').nlink == 2

...but does not work on Linux or Cygwin. (Thanks @DamianNowak) Adapting Pan's answer:

Dir.entries('directory').size == 2

should work.

检查 Ruby 中的目录是否为空

走过海棠暮 2024-10-25 20:48:48

实际上,C++ 在很多方面都比 C 更快,因为它能够支持许多翻译时结构,例如表达式模板。因此,c++ 矩阵库往往比 c 更优化,涉及更少的临时文件、展开循环等。例如,使用变体模板等新的 c++0x 功能,printf 函数可能比 c 更快且类型安全得多。用c实现的版本。我什至能够尊重许多 C 结构的接口并评估它们的一些参数(如字符串文字)翻译时间。

不幸的是,许多人认为 c 比 c++ 更快,因为许多人使用 OOP 意味着所有关系和用法都必须通过大型继承层次结构、虚拟分派等进行。这导致一些早期的比较与这些被认为是良好用法的完全不同。天。如果您要在适当的地方使用虚拟调度(例如,像内核中的文件系统,它们通过函数指针构建 vtable,并且通常基本上在 c 中构建 c++),那么您将不会对 c 感到悲观,并且具有所有新功能,可以明显更快。

不仅速度可能得到改进,而且在某些地方,实现会受益于更好的类型安全性。 C 中有一些常见的技巧(例如,当数据必须是泛型时,将数据存储在 void 指针中)会破坏类型安全,而 C++ 可以提​​供强大的错误检查。这并不总是通过 C 库的接口进行转换,因为这些接口具有固定的类型,但它肯定会对库的实现者有用,并且可以在某些可能从调用中提取更多信息的地方提供帮助通过提供“as-if”接口(例如,采用 void* 的接口可以实现为通用接口,并进行概念检查以确保参数可以隐式转换为 void*)。

我认为这将是对 c++ 相对于 c 的能力的一次很好的考验。

Actually, c++ has the ability to be faster than c in many ways, due to it's ability to support many translationtime constructs like expression templates. For this reason, c++ matrix libraries tend to be much more optimised than c, involve less temporaries, unroll loops, etc. With new c++0x features like variant templates, the printf function, for instance, could be much faster and typesafe than a version implemented in c. It my even be able to honor the interfaces of many c constructs and evaluate some of their arguments (like string literals) translationtime.

Unfortunately, many people think c is faster than c++ because many people use OOP to mean that all relations and usage must occur through large inheritance hierarchies, virtual dispatch, etc. That caused some early comparisons to be completely different from what is considered good usage these days. If you were to use virtual dispatch where it is appropriate (e.g. like filesystems in the kernel, where they build vtables through function pointers and often basically build c++ in c), you would have no pessimisation from c, and with all of the new features, can be significantly faster.

Not only is speed a possible improvement, but there are places where the implementation would benefit from better type safety. There are common tricks in c (like storing data in void pointers when it must be generic) that break type safety and where c++ can provide strong error checking. This won't always translate through the interfaces to the c library, since those have fixed typing, but it will definitely be of use to the implementers of the library and could assist in some places where it may be possible to extract more information from calls by providing "as-if" interfaces (for instance, an interface that takes a void* might be implemented as a generic interface with a concept check that the argument is implicitly convertible to void*).

I think this would be a great test of the power of c++ over c.

在C++中实现C标准库

走过海棠暮 2024-10-25 14:35:12

您还可以使用 Unix 文本编辑器 ed:

echo '
pattern1
garbage
pattern2
' > test.txt

cat <<-'EOF' | sed -e 's/^ *//' -e 's/ *$//' | ed -s test.txt &>/dev/null
  H
  /pattern1/+1,/pattern2/-1d
  wq
EOF

有关详细信息,请参阅:使用 ed 文本编辑文件脚本编辑器

You may also use the Unix text editor ed:

echo '
pattern1
garbage
pattern2
' > test.txt

cat <<-'EOF' | sed -e 's/^ *//' -e 's/ *$//' | ed -s test.txt &>/dev/null
  H
  /pattern1/+1,/pattern2/-1d
  wq
EOF

For more information see: Editing files with the ed text editor from scripts

使用 sed 删除两个模式之间的行(不包含)

走过海棠暮 2024-10-25 11:34:58

使用 Document#getElementById() 获取现有锚点元素,而不是 RootPanel#get()

Anchor searchLink = Anchor.wrap(Document.get().getElementById("search"));
searchLink.setHref(Window.Location.createUrlBuilder().
  setPath("search.html").buildString());

Use Document#getElementById() to get the existing anchor Element instead of RootPanel#get():

Anchor searchLink = Anchor.wrap(Document.get().getElementById("search"));
searchLink.setHref(Window.Location.createUrlBuilder().
  setPath("search.html").buildString());

使用 GWT 更新现有 HTML 链接?

走过海棠暮 2024-10-25 06:09:09

我没有使用过 Kinect 控制器,但您可以尝试以下实现的快速模板匹配算法:
https://github.com/dajuric/accord-net-extensions

发挥你的深度图像而不是标准灰度图像。样品已包含在内。

聚苯乙烯
该库还提供其他跟踪算法,例如卡尔曼滤波、粒子滤波、JPDAF、Camshift、Mean-shift(包含示例)。

I have not worked with the Kinect controller, but you can try fast template matching algorithm implemented in:
https://github.com/dajuric/accord-net-extensions

Just use your depth image instead standard grayscale image. The samples are included.

P.S.
This library also provides other tracking algorithms such as Kalman filtering, particle filtering, JPDAF, Camshift, Mean-shift (samples included).

滤波检测后的形状跟踪

走过海棠暮 2024-10-25 04:00:12

我有同样的错误消息 - 对我来说,问题是我指定了错误的 jar 依赖项(从另一个源复制)。您可以在此处查看可用的工件:

http://search.maven.org/#search% 7Cga%7C1%7Cclojure

我希望这对某人有帮助

I had the same error message - what was broken for me was I specified the wrong jar dependency (copied from another source). You can view available artefacts here:

http://search.maven.org/#search%7Cga%7C1%7Cclojure

I hope this helps someone

Lein deps 命令找不到工件

走过海棠暮 2024-10-24 21:12:33

您应该再次通读 jquery 文档,尤其是涵盖 数据的部分dataType 参数。 data 必须是键/值对象,即:

data: { 'userid': userid }

...对于 dataType,允许的值为 xml、html、text、json 和 jsonp。如果您的 PHP 脚本发送合适的 Content-type 标头(例如 header('Content-type: text/json');,那么您只需将此参数保留在默认(“智能猜测”)。jQuery 将从其内容类型标头推断响应类型,否则,服务器可能会假设您正在发送 HTML 并添加 HTML 内容类型标头本身。然后就窒息了。
设置 内部编码 和 < a href="http://www.php.net/manual/en/function.mb-http-output.php" rel="nofollow">输出编码 在 PHP 脚本中,以便它理解正确请求并发送格式正确的 UTF-8 响应。

为了进一步调试,您可能需要:

  • 在 PHP 中添加一些日志记录代码,例如,转储 $_POST 数组以及发送到服务器上文本文件的响应
  • 发布测试请求使用像curl或wget这样的东西到你的PHP脚本,看看响应是否是你所期望的,
  • 让你的javascript发布到一个虚拟脚本,除了记录请求并发送一个空响应之外什么也不做; 查看是否可以
  • 使用脚本调试器(例如 Firefox 上的 Firebug,或者 Chrom[e|ium] 中内置的东西) 单步调试您的 javascript;在成功处理程序中设置一个断点,看看是否命中,如果命中,响应包含什么内容

You should read through the jquery documentation once more, especially the part that covers the data and dataType parameters. data must be a key/value object, i.e.:

data: { 'userid': userid }

...and for dataType, allowed values are xml, html, text, json, and jsonp. If your PHP script sends a suitable Content-type header (e.g. header('Content-type: text/json');, then you can simply leave this parameter at the default ('Intelligent guess'). jQuery will infer the response type from its content type header. You should send the header anyway because otherwise, the server will probably assume you're sending HTML and add a HTML content type header itself, which jQuery then chokes on.
It's probably also a good idea to set the internal encoding and output encoding in your PHP script, so that it understands the request correctly and sends a well-formed UTF-8 response.

For further debugging, you might want to:

  • add some logging code to your PHP, for example, dump the $_POST array and the response you're sending to a text file on the server
  • post a test request to your PHP script using something like curl or wget, and see if the response is what you expect
  • have your javascript post to a dummy script that does nothing but log the request and send an empty response; see if that works
  • step through your javascript using a script debugger (e.g. Firebug on Firefox, or the thing that's built into Chrom[e|ium]); set a breakpoint inside the success handler and see if it's hit, and if so, what the response contains

当内容类型设置为 JSON UTF-8 时,jQuery AJAX 帖子为空

走过海棠暮 2024-10-24 16:30:56

mailo 看起来几乎是正确的,但该命令将是 ssh 命令的第二个参数,如下所示:

ssh username@server 'echo "* * * * * /path/to/script/" >> /etc/crontab'

或者,如果您的系统不会自动加载 /etc/crontab,您应该能够通过管道传输到 crontab 命令,如下所示:

ssh username@server 'echo "* * * * * myscript" | /usr/bin/crontab'

mailo seemed almost right, but the command would be the second argument to the ssh command, like this:

ssh username@server 'echo "* * * * * /path/to/script/" >> /etc/crontab'

Or if your system doesn't automatically load /etc/crontab you should be able to pipe to the crontab command like this:

ssh username@server 'echo "* * * * * myscript" | /usr/bin/crontab'

在 shell 脚本中使用 ssh 登录在服务器上创建 cron 条目

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