Failed to find Build Tools revision 23.0.1

I am trying to build my first app with react-native. I am following these 2 tutorial: - [https://facebook.github.io/react-native/docs/getting-started.html#content](https://facebook.github.io/react-n...

3 Mar at 20:37

Can using async-await give you any performance benefits?

Whenever I read about `async`-`await`, the use case example is one where there's a UI that you don't want to freeze. Either all programming books/tutorials are the same or UI blocking is the only cas...

Entity Framework : map multiple classes to one table

I think this is possible in nhiberate, but my question is about Entity Framework. In my database model - which I cannot modify - I have redundant columns that I would like to store in different class...

17 Apr at 18:57

How to add a color overlay to a background image?

I have seen this question a lot both on SO and the Web. But none of them has been what I am looking for. How do I add a color-overlay to a background image using CSS only? Example HTML: ``` <div cl...

Chart.js v2 - hiding grid lines

I am using Chart.js v2 to draw a simple line chart. Everything looks fine, except there are grid lines that I don't want: [](https://i.stack.imgur.com/ir7Ll.jpg) The documentation for Line Chart is ...

9 Nov at 07:55

Error while waiting for device: Time out after 300seconds waiting for emulator to come online

I have been trying to use android studio 2.0 emulator but I can not run my App on the Emulator. When I Run my App it shows the emulator with following details: Hax is Enabled - Hax ram_size 0x80000000...

21 Dec at 22:20

Is it possible to simplify an if-statement that checks for a combination?

I'm currently working on adding sound effects to a game, and although my current code is working fine, I'm looking for a way to simplify it. Basically, each object in the game has a string value indic...

17 Apr at 21:30

OpenXML - Cell.DateType is null

I can't determine when a Cell is a date. [](https://i.stack.imgur.com/dWi6P.png) I noticed the DataType is null so I can't distinguish if it's a Number of a Date. I am using the next code to extrac...

16 Apr at 23:0

How do I solve the "server DNS address could not be found" error on Windows 10?

After installing Windows 10, I am continuously getting the "" error. I will be able to use the Internet for 4-5 minutes, and after that for 20-25 min I will get the above error. How do I resolve thi...

22 Aug at 18:20

How to set HttpWebRequest.Timeout for a large HTTP request in C#

I'm not getting how to deal with HttpWebRequest.Timeout. Before, I used to set timeouts for Socket objects where it was straight-forward: Timeout set the maximum amount of time for sending or receivin...

7 May at 04:0

Docker look at the log of an exited container

Is there any way I can see the log of a container that has exited? I can get the container id of the exited container using `docker ps -a` but I want to know what happened when it was running.

16 Apr at 15:43

How to combine two lists in R

I have two lists: ``` l1 = list(2, 3) l2 = list(4) ``` I want a third list: ``` list(2, 3, 4). ``` How can I do it in simple way. Although I can do it in for loop, but I am expecting a one liner...

16 Apr at 14:48

docker unauthorized: authentication required - upon push with successful login

While pushing the docker image (after successful login) from my host I am getting "unauthorized: authentication required". Details below. ``` -bash-4.2# docker login --username=asamba --email=anand...

16 Apr at 11:45

Create and write to a text file inmemory and convert to byte array in one go

How can I create a .csv file implicitly/automatically by using the correct method, add text to that file existing in memory and then convert to in memory data to a byte array? ``` string path = @"C:\...

16 Apr at 08:9

Enumerate Dictionary.Values vs Dictionary itself

I was exploring the sources of ASP.NET core on GitHub to see what kind of tricks the ASP.NET team used to speed up the framework. I saw something that intrigued me. In the source code of the [ServiceP...

What is the recommended implementation pattern in ServiceStack for providing token-based authentication?

I have a group of ServiceStack-based services that will need to authenticate with one another using OAuth2. Specifically, the services will retrieve reference tokens from an external authentication s...

How to version and separate Service Fabric applications?

All of the service fabric [examples](https://github.com/Azure-Samples/service-fabric-dotnet-getting-started) depict single-solution service fabric examples. This seems to go to the philosophy of micr...

After installing Homebrew I get `zsh: command not found: brew`

``` ➜ ~ /usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)" -e:77: warning: Insecure world writable dir /usr/local/bin in PATH, mode 040677 It appears H...

21 Oct at 22:7

Loop through an object's properties and get the values for those of type DateTime

I have a list of objects (Cars). For each car in the list I need to loop through it and find any properties of type `DateTime`. If I find a property of `DateTime` I need to get the value and do a time...

3 Mar at 08:28

Why does the compiler allow Convert.ToString() to be assigned to an integer?

I accidentally stumbled across something similar to the following in my code, it compiles fine but then obviously bombs at runtime: ``` dynamic fiftySixDynamic = 56; int fiftySixInt = System.Convert....

18 Apr at 12:7

Resetting a form in Angular 2 after submit

I am aware that Angular 2 currently lacks a way to easily reset a form to a pristine state. Poking around I have found a solution like the one below that resets the form fields. It has been suggested...

17 Apr at 15:11

Why ConfigureAwait(false) does not work while Task.Run() works?

I'm calling an `async` library method with `.ConfigureAwait(false)`. But, I still end up with deadlock. (I'm using it in ASP.NET controller API) But, if I use the same method wrapped into `Task.Run()`...

18 Nov at 10:24

Angular2 @Input to a property with get/set

I have an Angular2 component in that component it currently has a bunch fields that have @Input() applied before them to allow binding to that property, i.e. ``` @Input() allowDay: boolean; ``` Wha...

13 Mar at 10:29

how to add three dots to text when overflow in html?

How can I show three dots(...) in a text like this? [](https://i.stack.imgur.com/srdbx.png)

15 Apr at 19:52

Dynamically add child components in React

My goal is to add components dynamically on a page/parent component. I started with some basic example template like this: main.js: ``` var App = require('./App.js'); var SampleComponent = require(...

8 Aug at 13:39