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c# - What is a NullReferenceException, and how do I fix it?

question from:https://stackoverflow.com/questions/65934801/object-reference-not-set-to-an-instance-of-an-object-system-nullreferenceexcept...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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visual studio code - python debug adapter not being found in vscode - WSL:Ubuntu

I'm trying to debug a python script in vscode using the Remote WSL extension with Python 3.9.1. When ... questions/65934783/python-debug-adapter-not-being-found-in-vscode-wslubuntu...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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typescript - How to download multiple files as zip from sharepoint library using graph api url in Angular?

I want to download files from share point using graph api in client side (Angular) Installed msal-angular and microsoft ... -files-as-zip-from-sharepoint-library-using-graph-api-ur...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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xcode - Guard with trailing closure - Swift Syntax

Let's say, I have a function which takes a closure as its last parameter, so it can be shortened ... //stackoverflow.com/questions/65933463/guard-with-trailing-closure-swift-syntax...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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html - Absolute positioned element creating overflow on it's scrollable container

I've a long table that needs horizantal scroll. On it's last column I've buttons that show ... /65930656/absolute-positioned-element-creating-overflow-on-its-scrollable-container...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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dictionary - Jackson: Deserialize Map key which is another JSON entity

I have inherited a project. So far it uses something binary for serialization. I would like to flip the ... /65930642/jackson-deserialize-map-key-which-is-another-json-entity...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - Matematical operation between couple fo number in list

I have a even list of numbers: lst = [2,3,4,1,6,7] I need to subtract the second ... stackoverflow.com/questions/65930604/matematical-operation-between-couple-fo-number-in-list...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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debugging - Unable to capture view hierarchy, xcode 11.7 + swift5

I never encounter with this bug before. Any inputs? I already tried: Run other projects on same xcode version ... /65930602/unable-to-capture-view-hierarchy-xcode-11-7-swift5...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - RandomForestClassifier is throwing error: one field contains comma-separated values

I am trying to fit a RandomForestClassifier, like this. from sklearn.pipeline import make_pipeline pipe = make_pipeline ... is-throwing-error-one-field-contains-comma-separated-val...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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datetime - How to get the real date and time of the country using Javascript even if the device time is wrong?

Is there a way to get the actual date and time of the country in Javascript even if the device time is inaccurate? ... date-and-time-of-the-country-using-javascript-even-if-the-de...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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forms - Xamarin Prism binding same command in multiple views

I've a page view which has TabView and each tabview item is a separate view, containing list. <TabView> ... /questions/65930531/xamarin-prism-binding-same-command-in-multiple-views...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Can Gremlin P.eq accept a Vertex?

I'm trying to apply the Element Existence recipe to insert only one edge that's considered "live" (not " ... stackoverflow.com/questions/65948295/can-gremlin-p-eq-accept-a-vertex...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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azure active directory - Manage app groups for windows virtual desktop using graph

I am struggling to find any relevant documentation on how to add an Azure AD group to an application group ... /65946634/manage-app-groups-for-windows-virtual-desktop-using-graph...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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html - Strange scrolling issue in Chrome (Can't scroll with mousewheel)

I've done something (I obviously can't work out what) that has messed up scrolling on Google Chrome desktop browser on a ... : 100vw; height: 94vh; padding-top: 64px; } #wrapper {...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - To download the folder from sftp server, It downloading the folder in local directory but when i am giving particular file path then its showing error

I am attaching the below code please give the solution any one. When I am giving the remote path such as: / ... the-folder-from-sftp-server-it-downloading-the-folder-in-local-dire...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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reactjs - Profiling a react component, irregular frame timings

I'm trying to investigate what happens to my slider component and why it feels sluggish. I am using ... .com/questions/65935179/profiling-a-react-component-irregular-frame-timings...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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javascript - why my popovers from bootstrap 5 return a Uncaught TypeError?

I want to use Bootstrap 5 popovers in my Angular app. Here's what I do: my index.html <!doctype html ... /65935175/why-my-popovers-from-bootstrap-5-return-a-uncaught-typeerror...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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inheritance - Inject appropriate class C#

I need some advice on how to better structure my classes. I have generic interface and class: public ... //stackoverflow.com/questions/65935164/inject-appropriate-class-c-sharp...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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node.js - How to implement optimistic locking from scratch?

I'm writing to files and I have a very un-contentious workload. However, there is a small chance of ... .com/questions/65935137/how-to-implement-optimistic-locking-from-scratch...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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excel - There's a problem with my loop (for next) and I can't figure it out?

So I've got a UserForm with 54 Textboxes which I all need to be checked for their values which need to be either empty ... a-problem-with-my-loop-for-next-and-i-cant-figure-it-out...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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Python list problem : want to get the data only and remove the title of the field

This question already has answers here: question from:https://stackoverflow.com/questions/65935060/python-list-problem-want-to-get-the-data-only-and-remove-the-title-of-the-fiel...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - http://localhost:9200/_cat/indices?v is empty

I'm really excited to start working with the package mordecai. I've been trying to run mordecai on ... stackoverflow.com/questions/65935058/http-localhost9200-cat-indicesv-is-empty...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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database - How do I Store JSON data from websockets?

I'm looking at storing raw JSON data received from a bunch of websockets and am feeling a bit overwhelmed with ... com/questions/65934877/how-do-i-store-json-data-from-websockets...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - How to select between two values, using one 60% of the times and the other 40% of the time

I'm sorry for the really shitty title but i cant explain it better in a short way. What im trying to do is to create ... -two-values-using-one-60-of-the-times-and-the-other-40-o...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c# - WPF Prism Updated to .NET 5 Unable to Start - Not Raising CoreCLR started event

I have a fairly complex WPF Prism app that I'm in the process of porting from NETFX to .NET 5. The app is ... -updated-to-net-5-unable-to-start-not-raising-coreclr-started-event...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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kubernetes - How to list my k8s jobs with a complex LabelSelector by client-go?

I want to list my k8s jobs with a label selector by client-go like this command: $ kubectl get jobs -l 'hello- ... how-to-list-my-k8s-jobs-with-a-complex-labelselector-by-client-go...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - folder path in Program arguments is missing the last '/' in sts4

in Run Configurations-> Arguments-> Program arguments, I have a folder path D:estPicFolder. But in the main method: ... folder-path-in-program-arguments-is-missing-the-last-in-sts4...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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php - Xampp Internet Connection

I was wondering if someone could please help me with an internet connection issue I'm having? I have ... from:https://stackoverflow.com/questions/65948387/xampp-internet-connection...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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