Scala equivalent of new HashSet(Collection)

What is the equivalent Scala constructor (to create an immutable HashSet) to the Java new HashSet<T>(c) where c is of type Collection<? extends T>?. All I can find in the HashSet Object is apply.

OpentextFile Permission Denied Error

I'm getting an error when i use opentextfile. The problem is weird because it works for a few hundred files then pops up. Basically the script gets a collection of files, searchs in them for a...

Hiding base class methods in code completion in Intellij?

Does Intellij have any way of customizing the filtering the methods that are displayed for code completion? For instance, if I have a class that implements a Collection, there are a large number...

Regex: Extracting readable (non-code) text and URLs from HTML documents

I am creating an application that will take a URL as input, retrieve the page's html content off the web and extract everything that isn't contained in a tag. In other words, the textual content...

MVC Model Validation w/ DataAnnotations -- Any way to make an ICollection Required?

I have a property in a Model class something like: /// <summary> /// A list of line items in the receipt /// </summary> public ICollection<ReceiptItem> Items { get; set;...

How to copy a java.util.List into another java.util.List

I have a List<SomeBean> that is populated from a Web Service. I want to copy/clone the contents of that list into an empty list of the same type. A Google search for copying a list suggested me to...

How to get the Headers/Column Name of gridview table binded with SqlDataSource

I want to extract the columns names of gridview and bind those columns names with a drop down to make a filter template. I'm facing little challenge to get the columns names from gridview on page...

Precision-Recall values of retrieved document

I'm learning precison and recall of documents and I'm having trouble understanding this particular question. The table below shows the relevance of the top 6 results returned by two...

How can I avoid ArrayIndexOutOfBoundsException or IndexOutOfBoundsException?

If your question is I am getting a java.lang.ArrayIndexOutOfBoundsException in my code and I do not understand why it is happening, what does it mean and how can I avoid it? This is meant to be...

Swift: How does zip() handle two different sized collections?

The zip() function takes two sequences and returns a sequence of tuples following: output[i] = (sequence1[i], sequence2[i]) However, the sequences can potentially be of different dimensions. My...

Where to get 'http' String literal in Java?

To create an URL e.g. by URL url = new URL("http", "localhost", "test.txt"); I have to use the constant String "http". Also in many other code lines. I was not able to find any constant that...

How to self-host Google's Material Design Icon-Fonts on your server, and use them in your website?

In this guide, they have instructed to download the Material Design Icon Fonts in formats like ttf, eot, woff, woff2 etc. and host them at a location on the server and use CSS like : @font-face...

Mongo db Query to filter nested array of objects in document

I have the following document { "userid": "5a88389c9108bf1c48a1a6a7", "email": "[email protected]", "lastName": "abc", "firstName": "xyz", "__v": 0, "friends": [{ "userid":...

MongoDB full text search over email address matching all values and possible fix taking too much time comparitively

When trying to search for part of an email address, I see an issue - When I search for a part of the email address containing the domain (eg- "[email protected]" when email ID is...

Firestore: Query a collection for all documents user has access to

Running into a situation that I'm unclear has a clean solution. In Firestore, I have a collection in which user are only allowed to access certain documents. Users can be assigned to one or more...

How do I get data from Mongodb

I have this snippet: const slackProfiles = await Promise.all( checkinsDetails.map(async ({ employeeEmail }) => { const employeeData = Employee.findOne({ workEmail: employeeEmail, ...

Unable to import package org.objectweb.asm

I am trying to compile other developer's open source custom library. I have compiled or find dependencies but it fails to build in gradle which was failing to import java's internal library...

how to use singleton firebase service on Flutter?

I have 4 pages. I called getRide() method in every 4 pages. it's means 4 times database call. Am I right? Is it possible to create a singleton for this scenario? Firebase Service: class...

Failing to get Karaf 4.2.6 to log using log4j2 with JsonLayout for a layout type

I have been at this all day and not getting it to work after trying so many combinations. At the end of the day, I am looking for an explicit list of steps to get JSON logging from Karaf. I have...

Validation on IEnumerable (Collection of strings)

Can this only be done via a custom validator or is there anything I'm missing? Just want to make a simple check on an ICollection<string> property that it has at least one item. Tried this with no...

Move worksheet within a workbook to the end

With xlwings, I am trying to move a worksheet within a workbook to the end. For example, a workbook contains a collection of the following sheets: Sheet1, Sheet2, Sheet3 How can I move Sheet1...

how do i solve the application error on heroku flask app?

bonjour everyone. i've an "application error" on heroku flask app i don't even know what i'm supposed to show so i' mjust gonna show this : 2020-12-12T16:34:38.202986+00:00 app[api]: Release v1...

How to handle multiple queries with React-Query

I've started playing with React-Query and it works great if I only need to fetch data from a single collection in my database. However, I'm struggling to find a good way to query multiple...

How to update Postman collection from Swagger

I use Swagger in a Java app and have a collection that sets the parameters e.g. uuid, name on the corresponding POST requests. However,on every changes on database, the collections should be...

django rest Error - AttributeError: module 'collections' has no attribute 'MutableMapping'

I'm build Django app, and it's work fine on my machine, but when I run inside docker container it's rest framework keep crashing, but when I comment any connection with rest framework it's work...

Fail: AttributeError: module 'collections' has no attribute 'Container'

I try to start python-pptx, but I have Error: AttributeError: module 'collections' has no attribute 'Container' in File "...\lib\site-packages\pptx_init_.py", line 14 Use Python 3.10,...

Getting AttributeError: module 'collections' has no attribute 'MutableMapping' while using any pip3 command on linux Python 3.10.0

Hey I have installed latest python 3.10 and pip3 on my linux(Zorin os lite 15.3 X64) machine but whenever I try to use any pip3 command I get following error For example I use the command: pip3...

Firebase v9: Get documents after user auth (with reactfire)

I am using the new Firebase SDK v9 with React (Next.js) and ReactFire. I want to get a firestore sub-collection by the user auth id: import { useFirestore, useFirestoreCollectionData,...

Function to make a list as unsorted as possible

I am looking for a function to make the list as unsorted as possible. Preferably in Python. Backstory: I want to check URLs statuses and see if URLs give a 404 or not. I just use asyncio and...

Java Generics: What is the benefit of using wildcards here?

The Collections.fill method has the following header: public static <T> void fill(List<? super T> list, T obj) Why is the wildcard necessary? The following header seems to work just as...