走过海棠暮

文章 评论 浏览 25

走过海棠暮 2024-09-19 00:25:17

我可能有点偏离基础,但这看起来像是 Rx 框架 非常适合。这样,您就可以转向纯粹的反应式编程,您可以声明在收到所有输入之前不会发送输出。对于外部消费者来说,您的门将充当 IObservable,这在某种程度上相当于 IEnumerable。任何观察者都只是看到输出的枚举,这些输出的发生延迟于输入的接收方式。

这里的主要好处是您可以链接可观察量。因此,如果您想将“与”门的输出链接到“或”门的输入,只需一行代码即可完成。对我来说,Rx 是对电路如何工作进行建模的完美框架,因为每个可观测值的结果都会在下一个可观测值的输入中发挥作用。

首先,我建议您观看 Channel9 上的系列视频

I may be a bit off base, but this looks like something the Rx Framework would be well suited for. With this, you move to a purely reactive form of programming, where you can declare that your output not be sent until all inputs are received. To the outside consumer, your gate would function as an IObservable<bool>, which is somewhat equivalent to an IEnumerable<bool>. Any observer simply sees an enumeration of outputs, which occur in delay to how the inputs are received.

The main benefit here is that you can chain observables. So, if you want to chain the output of an AND gate to the input of an OR gate, you can do that with a single line of code. To me, Rx is the perfect framework for modeling how an electrical circuit would work, since the results of each observable play a role in the input to the next observable.

To get started, I'd recommend viewing the series of videos on Channel9.

C# 中具有延迟输入的 AND 门

走过海棠暮 2024-09-18 20:34:03

Chrome 38 在设备模拟设置中包含网络模拟。您可以选择离线、GPRS、EDGE、3G、DSL 和 WiFi。还模拟增加的延迟。

它不如在真实设备上测试那么准确,但设置速度要快得多。

Chrome 38 includes network emulation in the device emulation settings. You can select from Offline, GPRS, EDGE, 3G, DSL and WiFi. Also emulates increased latency.

It's not as accurate as testing on a real device but it's much quicker to set up.

如何测试 iPhone 上的低带宽条件

走过海棠暮 2024-09-18 20:10:23

您可以编写 Visual Studio 宏以在文件中每个方法的开头添加断点。

宏看起来是这样的:

Imports System
Imports EnvDTE
Imports EnvDTE80
Imports EnvDTE90
Imports EnvDTE90a
Imports EnvDTE100
Imports System.Diagnostics

Public Module Module1
    Public Sub AddBreakpointForCurrentMethod()
        Dim textSelection As EnvDTE.TextSelection
        Dim codeElement As EnvDTE.CodeElement

        textSelection = DTE.ActiveWindow.Selection
        Try
            codeElement = textSelection.ActivePoint.CodeElement(vsCMElement.vsCMElementFunction)
            If Not (codeElement Is Nothing) Then
                DTE.Debugger.Breakpoints.Add(Line:=codeElement.StartPoint.Line, File:=DTE.ActiveDocument.FullName)
            End If
        Catch
            MsgBox("Add error handling here.")
        End Try
    End Sub

End Module

为了从长远来看解决问题,您可能会考虑将代码重构为更容易处理的更小的单元。

You can write a Visual Studio macro to add a breakpoint at the beginning of each method in the file.

A macro would look something along the lines of this:

Imports System
Imports EnvDTE
Imports EnvDTE80
Imports EnvDTE90
Imports EnvDTE90a
Imports EnvDTE100
Imports System.Diagnostics

Public Module Module1
    Public Sub AddBreakpointForCurrentMethod()
        Dim textSelection As EnvDTE.TextSelection
        Dim codeElement As EnvDTE.CodeElement

        textSelection = DTE.ActiveWindow.Selection
        Try
            codeElement = textSelection.ActivePoint.CodeElement(vsCMElement.vsCMElementFunction)
            If Not (codeElement Is Nothing) Then
                DTE.Debugger.Breakpoints.Add(Line:=codeElement.StartPoint.Line, File:=DTE.ActiveDocument.FullName)
            End If
        Catch
            MsgBox("Add error handling here.")
        End Try
    End Sub

End Module

To solve the problem in the long run you might consider refactoring your code into smaller units that can be handled more easily.

Visual Studio 08:设置文件级断点?

走过海棠暮 2024-09-18 15:53:07

一个简单而有效的其他方法是在视图中添加一个 php 字段。在 php 中,将节点 ID 保存到 $_SESSION 变量中,如果需要更长的生存时间,则保存到数据库中。

您可以利用传递给视图的强大参数,使其使用 nids 显示节点。

我们经常在网上商店中使用它来记住上次查看的产品等。

a simple and effective other approach is to add a php field in the view. In the php save the node id into the $_SESSION variable or to the database if you need longer live times.

You can make use of the powerfull arguments passing to views to make it show the nodes using the nids.

We often use it in webstores to remember the lastviewed products and such.

drupal View 对于这个用例有用吗

走过海棠暮 2024-09-18 08:09:58

根据 Tim 的帖子,在测试时,将“two”附加到批处理文件,导致找不到批处理标签“onetwo”,因此修改为 read &从单独的文本文件写入“当前”变量,保持批处理文件不变;

@echo off
call :Resume
goto %current%
goto :eof

:one
::Add script to Run key
reg add HKCU\Software\Microsoft\Windows\CurrentVersion\Run /v %~n0 /d %~dpnx0 /f
echo two >%~dp0current.txt
echo -- Section one --
pause
shutdown -r -t 0
goto :eof

:two
echo three >%~dp0current.txt
echo -- Section two --
pause
shutdown -r -t 0
goto :eof

:three
::Remove script from Run key
reg delete HKCU\Software\Microsoft\Windows\CurrentVersion\Run /v %~n0 /f
del %~dp0current.txt
echo -- Section three --
pause
goto :eof

:resume
if exist %~dp0current.txt (
    set /p current=<%~dp0current.txt
) else (
    set current=one
)

Based on Tim's post which, when tested, appended "two" to the batch file resulting in a failure to find the batch label "onetwo", so amended to read & write the "current" variable from a seperate text file, leaving the batch file untouched;

@echo off
call :Resume
goto %current%
goto :eof

:one
::Add script to Run key
reg add HKCU\Software\Microsoft\Windows\CurrentVersion\Run /v %~n0 /d %~dpnx0 /f
echo two >%~dp0current.txt
echo -- Section one --
pause
shutdown -r -t 0
goto :eof

:two
echo three >%~dp0current.txt
echo -- Section two --
pause
shutdown -r -t 0
goto :eof

:three
::Remove script from Run key
reg delete HKCU\Software\Microsoft\Windows\CurrentVersion\Run /v %~n0 /f
del %~dp0current.txt
echo -- Section three --
pause
goto :eof

:resume
if exist %~dp0current.txt (
    set /p current=<%~dp0current.txt
) else (
    set current=one
)

计算机重新启动后恢复批处理脚本

走过海棠暮 2024-09-17 20:29:35

您可以使用 EXISTS 构造在一个查询中执行此操作。

string sql = "IF EXISTS(Select A.CNum FROM TABLEA A, TABLEB B WHERE A.CID= B.CID AND A.CNum is NULL AND CID=@cID) BEGIN ..... END"

you can use EXISTS construct to do this in just one query.

string sql = "IF EXISTS(Select A.CNum FROM TABLEA A, TABLEB B WHERE A.CID= B.CID AND A.CNum is NULL AND CID=@cID) BEGIN ..... END"

选择并更新 DataTable 中的行

走过海棠暮 2024-09-17 18:02:31

感谢创作者,

if_attribute :project => {:user => is {user}} 

Thanks to the creator,

if_attribute :project => {:user => is {user}} 

如何检查 declarative_authorization 文件中的 own_to 模型属性?

走过海棠暮 2024-09-17 15:46:17

我认为您指的是 j展开

I think you're referring to jExpand.

展开表行以显示表中的内容 Jquery 插件

走过海棠暮 2024-09-17 06:30:39

是的,您可以从 Python 中的 txt 文件导入库列表。这很简单。

示例:如果我们有一个文本文件libraries.txt内容:

import numpy as np
import matplotlib.pyplot as plt
import rasterio

以下是一些示例代码,演示如何从包含导入语句的txt文件导入库列表:

with open('libraries.txt', 'r') as f:
    lines = f.readlines()

for line in lines:
    exec(line)

Yes, you can import a list of libraries from a txt file in Python. It is very simple.

Example: If we have a text file libraries.txt content:

import numpy as np
import matplotlib.pyplot as plt
import rasterio

Here is some sample code that demonstrates how to import a list of libraries from a txt file containing import statements:

with open('libraries.txt', 'r') as f:
    lines = f.readlines()

for line in lines:
    exec(line)

如何在Python中进行多次导入?

走过海棠暮 2024-09-17 04:43:47

下面是一些简洁的 Powershell 代码,用于通过修改文件夹的现有 ACL(访问控制列表)来将新权限应用于文件夹。

# Get the ACL for an existing folder
$existingAcl = Get-Acl -Path 'C:\DemoFolder'

# Set the permissions that you want to apply to the folder
$permissions = $env:username, 'Read,Modify', 'ContainerInherit,ObjectInherit', 'None', 'Allow'

# Create a new FileSystemAccessRule object
$rule = New-Object -TypeName System.Security.AccessControl.FileSystemAccessRule -ArgumentList $permissions

# Modify the existing ACL to include the new rule
$existingAcl.SetAccessRule($rule)

# Apply the modified access rule to the folder
$existingAcl | Set-Acl -Path 'C:\DemoFolder'

$permissions 变量列表中的每个值都与 此构造函数 用于 FileSystemAccessRule 类。

此页面提供。

Here's some succinct Powershell code to apply new permissions to a folder by modifying it's existing ACL (Access Control List).

# Get the ACL for an existing folder
$existingAcl = Get-Acl -Path 'C:\DemoFolder'

# Set the permissions that you want to apply to the folder
$permissions = $env:username, 'Read,Modify', 'ContainerInherit,ObjectInherit', 'None', 'Allow'

# Create a new FileSystemAccessRule object
$rule = New-Object -TypeName System.Security.AccessControl.FileSystemAccessRule -ArgumentList $permissions

# Modify the existing ACL to include the new rule
$existingAcl.SetAccessRule($rule)

# Apply the modified access rule to the folder
$existingAcl | Set-Acl -Path 'C:\DemoFolder'

Each of the values in the $permissions variable list pertain to the parameters of this constructor for the FileSystemAccessRule class.

Courtesy of this page.

使用 set-acl 和 powershell 设置继承和传播标志

走过海棠暮 2024-09-17 03:03:38

如果您使用的是 Jquery,请尝试此代码片段(假设该复选框有一个名为“checkbox”的类)。

jQuery('tr.checkbox').click(function() {
   if (jQuery(this).is(":checked")) {
      jQuery('td', this).removeAttr('disabled');
   } else {
      jQuery('td', this).attr('disabled', '');
   }
});`

Try this snippet (assumes that the checkbox has a class called "checkbox") if you are using Jquery.

jQuery('tr.checkbox').click(function() {
   if (jQuery(this).is(":checked")) {
      jQuery('td', this).removeAttr('disabled');
   } else {
      jQuery('td', this).attr('disabled', '');
   }
});`

基于 HTML 中的复选框使行可编辑

走过海棠暮 2024-09-16 23:38:13

我不确定您问题的动机是什么,但您可以考虑将 T 的工厂作为隐式参数传递。这称为使用类型类临时多态性

object Test extends Application {
  trait Factory[T] {
    def apply: T
  }
  object Factory {
    /**
     * Construct a factory for type `T` that creates a new instance by
     * invoking the by-name parameter `t`
     */
    def apply[T](t: => T): Factory[T] = new Factory[T] {
      def apply = t
    }
  }

  // define a few traits...
  trait T1
  trait T2

  // ...and corresponding instances of the `Factory` type class.
  implicit val T1Factory: Factory[T1] = Factory(new T1{})
  implicit val T2Factory: Factory[T2] = Factory(new T2{})

  // Use a context bound to restrict type parameter T
  // by requiring an implicit parameter of type `Factory[T]`
  def create[T: Factory]: T = implicitly[Factory[T]].apply

  create[T1]
  create[T2]

}

另一方面,您可以在运行时调用编译器,详见 这个答案“Scala 中的动态混合 - 可能吗?”。

I'm not sure what the motivation is for your question, but you could consider passing a factory for T as an implicit parameter. This is known as using type classes or ad-hoc polymorphism.

object Test extends Application {
  trait Factory[T] {
    def apply: T
  }
  object Factory {
    /**
     * Construct a factory for type `T` that creates a new instance by
     * invoking the by-name parameter `t`
     */
    def apply[T](t: => T): Factory[T] = new Factory[T] {
      def apply = t
    }
  }

  // define a few traits...
  trait T1
  trait T2

  // ...and corresponding instances of the `Factory` type class.
  implicit val T1Factory: Factory[T1] = Factory(new T1{})
  implicit val T2Factory: Factory[T2] = Factory(new T2{})

  // Use a context bound to restrict type parameter T
  // by requiring an implicit parameter of type `Factory[T]`
  def create[T: Factory]: T = implicitly[Factory[T]].apply

  create[T1]
  create[T2]

}

At the other end of the spectrum, you could invoke the compiler at runtime, as detailed in this answer to the question "Dynamic mixin in Scala - is it possible?".

如何在 scala 的泛型方法中创建特征的实例?

走过海棠暮 2024-09-16 16:35:23

这行不通:

  • 处理功能
  • pull -u
  • if 分支
    • 合并
  • commit -m“Worked on feature ABC”
  • push

如果您有本地更改,则可能无法合并。您/可以/做的是:

  • 处理功能
  • 拉动 -u
  • 处理功能
  • 拉动 -u
  • 处理功能
  • 拉动 -u
  • ...
  • commit -m“处理功能 ABC”
  • 推送

您可能还想调查 < code>hg fetch,它是一个附带的 Mercurial 可选插件,可以在同一步骤中执行拉取/合并。如果您在提交之前忘记拉取,这很有用。

This won't work:

  • work on a feature
  • pull -u
  • if branch
    • merge
  • commit -m "Worked on feature ABC"
  • push

If you have local changes, you may not merge. What you /can/ do is this:

  • work on a feature
  • pull -u
  • work on a feature
  • pull -u
  • work on a feature
  • pull -u
  • ...
  • commit -m "Worked on feature ABC"
  • push

You might also want to investigate hg fetch, it's a shipped with mercurial optional plug-in that does the pull/merge in the same step. Which is good for if you forgot to pull before committing.

提交-拉-合并-推还是拉-合并-提交-推?

走过海棠暮 2024-09-16 15:59:38

没有提到的是 MimeKit
它可以完成您需要它做的一切。

(这仍然是谷歌的热门,所以我想添加这个宝石)

Something that hasn't been mentioned is MimeKit.
It does everything that you need it to do.

(this is still a top hit in google so thought I'd add this gem)

C# 创建 MIME 消息?

走过海棠暮 2024-09-16 04:26:55

克莱默是对的。我建议扩展他的解决方案以使其可降解。

/ Now, an action that would return the amount of time since the user was last seen
public ActionResult GetLastSeenTime()
{
if (Request.IsAjax) {    
return Json(new { TimeAway = Date.Time.Now.Subtract((DateTime)Session["LastSeen"]).TotalMinutes});
}
ViewData.Add("LastSeen", Date.Time.Now.Subtract((DateTime)Session["LastSeen"]).TotalMinutes}));
return View("MyView")
}

ckramer is right. I suggest expending his solution to make it js degradable.

/ Now, an action that would return the amount of time since the user was last seen
public ActionResult GetLastSeenTime()
{
if (Request.IsAjax) {    
return Json(new { TimeAway = Date.Time.Now.Subtract((DateTime)Session["LastSeen"]).TotalMinutes});
}
ViewData.Add("LastSeen", Date.Time.Now.Subtract((DateTime)Session["LastSeen"]).TotalMinutes}));
return View("MyView")
}

asp.net mvc 2:在线用户

更多

推荐作者

丶视觉

文章 0 评论 0

蓝礼

文章 0 评论 0

birdxs

文章 0 评论 0

foonlee

文章 0 评论 0

微信用户

文章 0 评论 0

    我们使用 Cookies 和其他技术来定制您的体验包括您的登录状态等。通过阅读我们的 隐私政策 了解更多相关信息。 单击 接受 或继续使用网站,即表示您同意使用 Cookies 和您的相关数据。
    原文