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Running a program expecting input from terminal I can ”close” stdin by Ctrl+D. Is there any way to reopen stdin after that? See Question&Answers more detail:os...

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I've npm installed the latest node-sass, and scss files work fine until I use @use. I have a _tokens.scss file in / ... @use... as * but no-go. See Question&Answers more detail:os...

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dart - how to download/create pdf through webview in flutter

I have created a webviewscaffold but can't download anything from it while browsing from the webview, I made ... work like any other browser. See Question&Answers more detail:os...

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http - Why this simple web server is called even number times?

I'm trying to learn Go web programming, and here is a simple web server: it prints out the times ... the function HelloWorld being called? See Question&Answers more detail:os...

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vb.net - Random array using LINQ and C#

I was reading an article on MSDN Magazine about using the Enumerable class in LINQ to generate a random array. ... OrderBy(Function() rnd.Next) See Question&Answers more detail:os...

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c# - How do I select correct DbSet in DbContext based on table name

Say I have a DbContext with the following DbSets class Amimals : DbContext { public DbSet<Dog> Dogs { get; set; } ... with DbSet */ ... } } See Question&Answers more detail:os...

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numpy - How can I take the square root of -1 using python?

When I take the square root of -1 it gives me an error: invalid value encountered in sqrt How do I fix that? ... arr=sqrt(-1) print(arr) OUTPUT See Question&Answers more detail:os...

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arrays - Python list([]) and []

from cs1graphics import * from math import sqrt numLinks = 50 restingLength = 20.0 totalSeparation = 630.0 elasticityConstant ... way to do it? See Question&Answers more detail:os...

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integer - Inconsistent behavior on java's ==

Consider this code: class test { public static void main(String[] args) { test inst_test = new test ... practical reason for this inconsistency? See Question&Answers more detail:os...

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algorithm - How to solve: T(n) = T(n - 1) + n

I have the following worked out: T(n) = T(n - 1) + n = O(n^2) Now when I work this out I find ... done something wrong or is it just that way? See Question&Answers more detail:os...

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How can I get rid of margin around my HTML content?

The following HTML display fine. <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www. ... "glued" to the browser window? See Question&Answers more detail:os...

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php - Opposite of nl2br? Is it str_replace?

So the function nl2br is handy. Except in my web app, I want to do the opposite, interpret line breaks as ... think I tried every combination... See Question&Answers more detail:os...

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swift - iOS 11 Floating TableView Header

Have an app going with multiple sections, a few rows per section when "expanded", none when "collapsed". Each ... there's that. Any ideas? See Question&Answers more detail:os...

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node.js - Dialogflow easy way for authorization

Does exist an easy way to connect Dialogflow agent to node.js code? When I use this code with the ... without installing third party APIs. See Question&Answers more detail:os...

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Why is `with open()` better for opening files in Python?

Frequently when someone posts their code, people will add as an aside that "you should use with open('filename') ... I couldn't find it myself. See Question&Answers more detail:os...

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Configure Multiple MongoDB repositories with Spring Data Mongo

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c - What are expressions with side effects and why should they be not passed to a macro?

I came across a statement in the text C How to Program: "Expressions with side effects (i.e., variable values are ... be not passed to a macro? See Question&Answers more detail:os...

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dynamic - Can I apply Dart's string interpolation dynamically?

(from the Dart discussion mailing list by Tristan McNab) I'm trying to build a server-side MVC framework and ... indicates that it isn't. See Question&Answers more detail:os...

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c++ - How bad is redefining/shadowing a local variable?

While upgrading a legacy project to VS2015, I noticed there were a lot of errors where a local variable was redefined ... is low or no risk? See Question&Answers more detail:os...

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swift - Projecting the ARKit face tracking 3D mesh to 2D image coordinates

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java - Groovy: Create a Map with JAX-B Object's specific attributes

I have a sample LEDES XML file https://codebeautify.org/xmlviewer/cbdc79e7 Generted Ledesxmlebilling21 class ... .groovy:87) See Question&Answers more detail:os...

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html - Chart.js not showing in Angular2 if it doesn't exist on the main page

It seems fine whenever I dump the chart to the main app.component.html, but as soon as I use it in a child ... ; lineChart.Line(data,opts); } } See Question&Answers more detail:os...

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java - Passing output of one test method to another method testng

I have to write the following unit test cases in testng: saveProductTest which would return productId if product ... another method in testng. See Question&Answers more detail:os...

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c# - How properly generate bootstrap grid via loop using Razor?

I use ASP.NET MVC and bootstrap. I have many objects (>2) in collection and for each need a <div class="col-xs-6"> ... ) </div> } } </div> } See Question&Answers more detail:os...

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python - Custom sorting with Pandas

I have the following dataframe that I would like to sort first by Criticality and then by Name: Name ... Low foo Critical foo Medium See Question&Answers more detail:os...

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javascript - Does every object in JS have a toString() method?

If that is true, why this error happens? The req.body object is not null or undefined as the picture shows ... undefined toString, no good. See: See Question&Answers more detail:os...

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php - Why can't I access the array with index directly?

I got confused when I was trying to access an array element directly with its index. I guess I could ... ( $arrOfObj['m_strEmailAddress'] ); See Question&Answers more detail:os...

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javascript - Direct call of a functional component

Stateless functional component is just a function that receives props and returns React element: const Foo = ... like described above? See Question&Answers more detail:os...

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