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How to handle failure in constructor in C++?

I want to open a file in a class constructor. It is possible that the opening could fail, then the object ... it in a non-throw constructor? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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android - Custom seekbar (thumb size, color and background)

I would like to have this seekbar in my Android project : This is my seekbar : <SeekBar android:id="@+id/ ... not understand how I can do. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - How to open file using argparse?

I want to open file for reading using argparse. In cmd it must look like: my_program.py /filepath That's my ... file) args = parser.parse_args() See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - not implementing all of the methods of interface. is it possible?

Is there any way to NOT implement all of the methods of an interface in an inheriting class? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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C# FileStream : Optimal buffer size for writing large files?

Suppose I'm writing a couple of files to disk, between 2MB and 5GB. What are sensible buffer values for the ... I stick to kilobyte-buffers ? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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WPF C#: Rearrange items in listbox via drag and drop

I am trying to figure out how to move the items in a pre-populated listbox up and down via mouse drags ... to the visual studios environment. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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asp.net mvc - Difference Between $.getJSON() and $.ajax() in jQuery

I am calling an ASP.NET MVC action public JsonResult GetPatient(string patientID) { ... from JavaScript ... . Any thoughts appreciated. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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How to create an Android Library Jar with gradle without publicly revealing source code?

I would like to create a Jar out of an Android library project. It is set up the following way: ... ] on source set main. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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android - Blur Background Behind AlertDialog

As we know from API 14 the Below Blur has been deprecated dialog.getWindow().addFlags(WindowManager.LayoutParams. ... have tried FAST blur See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - Where is pip cache folder?

Where is Python pip cache folder? I had an error during install and now reinstall packages using cache files. ... directory or will remove soon? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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javascript - Get an array of list element contents in jQuery

I have a structure like this: <ul> <li>text1</li> <li>text2</li> <li>text3</li> </ul> How do I use ... this: '"text1", "text2", "text3"' See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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xml - SVG rounded corner

I have the following SVG: <svg> <g> <path id="k9ffd8001" d="M64.5 45.5 82.5 45.5 82.5 64.5 64.5 64.5 ... ="url(#k9ffb0001)"></path> </g> </svg> See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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289 views

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Android Studio 3.0 Execution failed for task: unable to merge dex

android studio was getting build error while build execution with following: Error:Execution failed for task ':app: ... github site and solved See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Prevent WebView from displaying "web page not available"

I have an app that makes extensive use of a WebView. When the user of this app does not have Internet ... doesn't actually clear the view. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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asp.net web api - Web API: how to access multipart form values when using MultipartMemoryStreamProvider?

I used to use MultipartFormDataStreamProvider to process multipart requests. Since I want the uploaded file to be stored in ... ().Result; } } See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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syntax - What does the "@" symbol do in PowerShell?

I've seen the @ symbol used in PowerShell to initialise arrays. What exactly does the @ symbol denote and where can I read more about it? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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mongodb - mongo group query how to keep fields

Everybody. In mongo group query, the result shows only the key(s) in arguments. How to keep the first document in each ... ", "count" : 1 } ] See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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123 views

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Android permissions: Phone Calls: read phone state and identity

My android app has nothing to do with phone calls, but I'm seeing that when I install a debug build on ... 't need this permission? Thanks! See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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tkinter - How to bundle a Python application including dependencies?

I need to package my Python application, its dependencies and Python into a single MSI installer. The end ... executable is not required See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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176 views

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sql - MySQL combine two columns and add into a new column

I have the following structure with a MySQL table: +----------------+----------------+- ... the table without destroying the original 3 fields. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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iis - How to keep ASP.NET assemblies in AppDomain alive?

Scenario: I've an n-Tier enterprise ASP.NET application deployed using Web Deployment Projects. All tiers ... resolving the mentioned problem. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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How to log in to Facebook in Xamarin.Forms

I want to make a Xamarin.Forms project, targeting iOS, Android and Windows Phone. My app needs to authenticate ... of the Facebook login flow? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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271 views

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java - Print all the Spring beans that are loaded

Is there a way to print all the spring beans that are loaded on startup?I am using Spring 2.0. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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501 views

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How to mark a build unstable in Jenkins when running shell scripts

In a project I'm working on, we are using shell scripts to execute different tasks. Some are sh/bash ... failed when running shell scripts? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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244 views

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java - How to set JAVA_HOME in Mac permanently?

I am trying to set JAVA_HOME by entering export JAVA_HOME=/Library/Java/Home at terminal. It sets the JAVA_HOME ... can I set it permanently? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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178 views

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android - NavigationView menu items with counter on the right

The new NavigationView in the new Design Support Library works really great. They use "menu-items" to display the ... like in the GMail app. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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161 views

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jquery - How to fix a header on scroll

I am creating a header that once scrolled to a certain amount of pixels it fixes and stays in place. Can ... background:orange; postion:fixed; } See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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243 views

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java - Tomcat7 starts too late on Ubuntu 14.04 x64 [Digitalocean]

i am using digitalocean and trying to install and start tomcat on ubuntu but unfortunately i can not do it. ... 849512 168400 332 18780 688468 See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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