clear | 易学教程

Powershell Clear-Host alternative to preserve the buffer

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问题 I would like something like Clear-Host, but would like the scrollback. So far, all I have is basically adding newlines until the screen is clear. Though when I do this, the cursor starts writing at the bottom of the page (as to be expect- though not desired). I would hope to start writing at the top of the page (for menus and such- which is the natural thing to do) This is the code to print the dynamic count of new lines: do {Write-Host ""; $i++} while ($i -ne $Host.UI.RawUI.WindowSize.Height

iPhone clear CGContext

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问题 I create a circle with a nice shadow with this code (I use MonoTouch.net for iPhone, Objective-C answers are fine of course) UIGraphics.PushContext (ctx); SizeF shadowSize = new SizeF (0f, -3f); ctx.SetRGBFillColor (194f / 255f, 212f / 255f, 238f / 255f, 1f); ctx.SetAllowsAntialiasing (true); ctx.SetShadowWithColor (shadowSize, 20, new CGColor (0.9f, 0.7f)); RectangleF area = new RectangleF (35f, 15f, 210f, 210f); ctx.FillEllipseInRect (area); UIGraphics.PopContext (); Then I want to add to

How to clear NiFi queues?

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问题 We are creating some flows in NiFi and there might be some cases where the queues are being build up but due to some reason the flow doesn't work as expected. At the end of the day, i would like to clear the queues and somehow would like to automate it. The question is how can we delete the queues from backend? Is there any way we can achieve that? 回答1: In addition to the explicit "Drop Queue" function Bryan mentioned, a couple other features you may be interested are the "Back Pressure" and

How do I clear the cache and cookies for an embedded Chromium browser?

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问题 I created a browser with TChromium. The TChromium is created dynamically. Facebook access (login) At the end of the process, the component is destroyed. The problem occurs when the component is created again He continues with the previous session (login). I need to clean all cache and cookies. (Force Log out) Below the code I create the component by: var Chromium: TChromium; begin try Chromium := TChromium.Create(nil); Chromium.SetParentComponent(Form1); Chromium.Align := alClient; chromium

How to clear dynamically created view from memory?

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问题 I'm trying to clear some views from memory. Here's the situation. I have an Activity that I'll call it A and another B. Now I press a button in Activity A that calls Activity B that creates a lot of views dynamically After this, I press back button to return to Activity A Repeat theses 2 steps a lot of times. The result is, in DDMS, the number of objects and memory Allocated stills growing ( the number of objects is increased by 88 and Allocated by 0,002MB ) That means the views dont be

WPF Validation: Clearing all validation errors

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问题 I have a WPF UserControl with many other controls inside of it. TextBoxes are among these. Every TextBox has its own validation: <TextBox> <TextBox.Text> <Binding Path="MyPath" StringFormat="{}{0:N}" NotifyOnValidationError="True"> <Binding.ValidationRules> <r:MyValidationRule ValidationType="decimal" /> </Binding.ValidationRules> </Binding> <TextBox.Text> <TextBox> a Now suppose the user types some invalid characters into them. They will all become highlighted red. Now I want to reset all

Complex Divs (float/clear) - Two main columns + smaller internal columns

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I have the following basic layout: <div id="sidebar" style="float: left; width: 250px; display block;"></div> <div id="maincontent"></div> Fairly self explanatory - on the left I have navigation stuff and info, and the rest of the page is the main content. I have a user control for which I'm using the following: <div id="weather-data"> <div id="today" style="float: left;"></div> <div id="tomorrow" style="float: left;"></div> <div id="etc" style="float: left;"></div> </div> Each block displays an image and some text for the daily weather. All the above displays fine, but the problem is as such:

Google Sheets copy and paste row into another sheet and then delete content from the first sheet

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I have 2 sheets with an identical number of columns and all the columns have identical headers. When a project is "ready" I want to be able to select "Ready" in a data validation in that row and have that copy that row over to the Projects sheet and remove that row from the Forecasted Projects sheet. I would prefer if the contents only could be wiped from that copied row on the forecast sheet and then all other rows below it that have content could be moved up. As is, the script will copy the "Ready" job from the forecasted projects sheet and paste it in the projects sheet in the last non

Clear textbox when focused

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问题 How can I clear my TextBox when it is focused? I want to do this in MVVM way. If it has meaning - my TextBox control has Text property binded with some property in ViewModel. TextBox displays sth like "50,30 zł". It is uncomfortable for user to select text, delete it and write new text, so I want to clear old Text when Texbox is focused. 回答1: You can write your own behavior or even control. I will try to explain the first one: First, you should a add reference to the System.Windows

WCF service clear buffer

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I am currently working on a WCF service and have a small issue. The service is a Polling Duplex service. I initiate data transfer through a message sent to the server. Then the server sends large packets of data back through the callback channel to the client fairly quickly. To stop the I send a message to the sever telling it do stop. Then it sends a message over the callback channel acknowledging this to let the client know. The problem is that a bunch of packets of data get buffered up to be sent through the callback channel to the client. This causes a long wait for the acknowledgement to