Sending and receiving data over a network using TcpClient
I need to develop a service that will connect to a TCP server. Main tasks are reading incoming messages and also sending commands to the server in ten minutes, like a synchronize command. For example,...
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- 27 Jul at 19:47
How to specify new GCC path for CMake
My OS is centos which has a default gcc in path `/usr/bin/gcc`. But it is old, I need a new version of gcc. So I install a new version in a new path `/usr/local/bin/gcc`. But when I run `cmake`, it s...
How to create unique keys for React elements?
I am making a React app that allows you to make a list and save it, but React has been giving me a warning that my elements don't have a unique key prop (elements List/ListForm). How should I create a...
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- 17 Sep at 16:57
How to resolve Value cannot be null. Parameter name: source in linq?
I don't know why I get this kind of error. It happens sometimes, and I suspicious of my code that still have thread running while I close my Application. So when I open again it happens. ``` Value can...
Remove Safari/Chrome textinput/textarea glow
I am wondering if its possible to remove the default blue and yellow glow when I click on a text input / text area using CSS?
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- 19 Feb at 15:38
How to Convert Boolean to String
I have a Boolean variable which I want to convert to a string: ``` $res = true; ``` I need the converted value to be of the format: `"true" "false"`, not `"0" "1"` ``` $converted_res = "true"; $co...
How to check if curl is enabled or disabled
> [Writing a function in php](https://stackoverflow.com/questions/8786428/writing-a-function-in-php) I'm using the following code ``` echo 'Curl: ', function_exists('curl_version') ? 'Enabled...
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- 12 Mar at 18:2
Why does python use 'else' after for and while loops?
I understand how this construct works: ``` for i in range(10): print(i) if i == 9: print("Too big - I'm giving up!") break else: print("Completed successfully") ``` But I...
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- 12 Aug at 03:54
Open a folder using Process.Start
I saw the [other topic](//stackoverflow.com/q/334630) and I'm having another problem. The process is starting (saw at task manager) but the folder is not opening on my screen. What's wrong? ``` Syste...
Is it possible to make abstract classes?
How can I make a class or method abstract in Python? I tried redefining `__new__()` like so: ``` class F: def __new__(cls): raise Exception("Unable to create an instance of abstract class ...
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- 25 Jan at 04:16
How to update existing images with docker-compose?
I have multiple microservices and I am using docker-compose for development deployments. When there are some changes in the microservices code base, I am triggering ci job to re-deploy them. I have be...
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- 20 Oct at 08:55
'ng' is not recognized as an internal or external command, operable program or batch file
I tried running npm install -g angular-cli [](https://i.stack.imgur.com/zHGBk.png) I also tried adding it to the Enviorment Variables under PATH: (C:\Users\Administrator\AppData\Roaming\npm\node_mod...
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- 20 Jun at 15:25
Traverse all the Nodes of a JSON Object Tree with JavaScript
I'd like to traverse a JSON object tree, but cannot find any library for that. It doesn't seem difficult but it feels like reinventing the wheel. In XML there are so many tutorials showing how to tra...
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- 18 Aug at 12:56
Java GC (Allocation Failure)
Why always "GC (Allocation Failure)"? Java HotSpot(TM) 64-Bit Server VM (25.25-b02) for linux-amd64 JRE (-b17), ``` CommandLine flags: -XX:CMSInitiatingOccupancyFraction=60 -XX:GCLogFileSize=1048...
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- 18 Mar at 08:44
Laravel Password & Password_Confirmation Validation
I've been using this in order to edit the User Account Info: ``` $this->validate($request, [ 'password' => 'min:6', 'password_confirmation' => 'required_with:password|same:password|min:6' ]);...
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- 12 Apr at 13:2
What does a just-in-time (JIT) compiler do?
What does a JIT compiler specifically do as opposed to a non-JIT compiler? Can someone give a succinct and easy to understand description?
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- 28 Dec at 21:8
How do I "commit" changes in a git submodule?
I have, in my naivety, set up a git submodule and treated it like a Subversion external - i.e. it's now full of changes that I've just realized haven't been committed or pushed anywhere. Is there som...
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- 13 Feb at 17:53
How to manually trigger click event in ReactJS?
How can I manually trigger a click event in ? When a user clicks on element1, I want to automatically trigger a click on the `input` tag. ``` <div className="div-margins logoContainer"> <div id="el...
The backend version is not supported to design database diagrams or tables
I'm trying to add a table to my newly created database through SQL Server Management Studio. However I get the error: > To see my currently installed versions I clicked about in SSMS and this is wh...
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- 29 Apr at 15:49
Why is vertical-align:text-top; not working in CSS
I want to align some text to the top of a div. It seems that `vertical-align: text-top;` should do the trick, but it doesn't work. The other things that I have done, such as putting the divs into colu...
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- 16 Jul at 15:36
How to link a folder with an existing Heroku app
I have an existing Rails app on GitHub and deployed on Heroku. I'm trying to set up a new development machine and have cloned the project from my GitHub repository. However, I'm confused as to how to ...
VSCode regex find & replace submatch math?
``` %s@{fileID: \(213[0-9]*\)@\='{fileID: '.(submatch(1)-1900)@ ``` I am using this regex search and replace command in vim to subtract a constant from each matching id. I can do the regex find in ...
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- 5 Oct at 12:24
How can one tell the version of React running at runtime in the browser?
Is there a way to know the runtime version of React in the browser?
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- 3 May at 02:22
When should I use a List vs a LinkedList
When is it better to use a [List](https://learn.microsoft.com/en-us/dotnet/api/system.collections.generic.list-1) vs a [LinkedList](https://learn.microsoft.com/en-us/dotnet/api/system.collections.gene...
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- 30 Aug at 14:14
Find out where MySQL is installed on Mac OS X
How do I find out where MySQL is installed on Mac OS X 10.7.9? I have MAMP installed so I presume that it is bundled with this install?