clearscreen | Cross-platform terminal screen clearing library | Command Line Interface library
kandi X-RAY | clearscreen Summary
kandi X-RAY | clearscreen Summary
Tested with and tweaked for over 80 different terminals, multiplexers, SSH clients. See my research notes in the TERMINALS.md file.
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QUESTION
I'm using Vuejs and i would i have two methods one is to make a call and another one is to hangup
i would like to access to device variable that i have in makeCall methods from hangup
error : Cannot set property 'device' of undefined at eval
this is my code :
...ANSWER
Answered 2021-May-11 at 03:13The error was due to how this works in JS. The function declaration in the promise was creating a different this context than the main function. The function keyword sets this based on where it is called, whereas arrow functions set this based on where it is defined in the code.
All you need to do is replace the function(response){} declaration in the getAPI promise .then with an arrow function, and it will work fine.
QUESTION
I'm creating a console application and have the need for a menu. This menu can link to a next menu or preform an action. What is a good OOP way of doing this?
I've seen many do it like this, but isn't really maintainable
...ANSWER
Answered 2021-May-02 at 13:30It looks like you are looking for function pointers. You can store them in a vector like so:
QUESTION
I'm coding a small OS kernel which is supposed to have a driver for the Intel's xHC (extensible host controller). I got to a point where I can actually generate Port Status Change Events by resetting the root hub ports. I'm using QEMU for virtualization.
I ask QEMU to emulate a USB mouse and a USB keyboard which it seems to do because I actually get 2 Port Status Change Events when I reset all root hub ports. I get these events on the Event Ring of interrupter 0.
The problem is I can't find out why I'm not getting interrupts generated on these events.
I'm posting a complete reproducible example here. Bootloader.c is the UEFI app that I launch from the OVMF shell by typing fs0:bootloader.efi. Bootloader.c is compiled with the EDK2 toolset. I work on Linux Ubuntu 20. Sorry for the long code.
The file main.cpp is a complete minimal reproducible example of my kernel. All the OS is compiled and launched with the 3 following scripts:
compile
...ANSWER
Answered 2021-Apr-26 at 06:13I finally got it working by inverting the MSI-X table structure found on osdev.org. I decided to completely reinitialize the xHC after leaving the UEFI environment as it could leave it in an unknown state. Here's the xHCI code for anyone wondering the same thing as me:
QUESTION
I'm building a calculator app and like the title states, I want to find a way where I can store my 'display value' in a variable to be used in math functions (+ - * /). The buttons do display as expected but the next use case would be to capture that value and place it in a variable.
...ANSWER
Answered 2021-Apr-05 at 17:37You have already done the work needed to capture key presses. You can just make a global variable and update that variable in each click listener.
QUESTION
I'm working on a Svelte & TypeScript project and running into a problem with importing native Node modules. For example, typing
...ANSWER
Answered 2021-Mar-27 at 16:34I figured it out. Instead of
QUESTION
I am trying to deploy my svelte project, but I am having trouble having the bundle javascript activate outside of livereload plugin. When I run rollup -c -w, the code displays fine, but serving the application with other server does not activate the javacsript. It should at least console.log something and hopefully add the html, but it only display a blank page.
rollup.config.js
...ANSWER
Answered 2021-Feb-25 at 02:56Okay, I have solve this problem, but I do not understand why. I will share what I have discover and come back an update as I understand more. First, the reason why, I was having trouble in production is that I was trying to access {production_url}/index.html. For whatever reason, I was unable to get svelte to hydrate the frontend via calls to the index.html even though the html could retrieve all the necessary javascript and css. However, once I fixed the static references for the route {production_url}/, it hydrated my app correctly. The same affect could be seen in localhost. localhost:5000/ hydrates correctly but localhost:5000/index.html would not hydrate.
QUESTION
I created a basic svelte project (it uses rollup). I want to import a native library, crypto into the project like so.
...ANSWER
Answered 2021-Feb-11 at 16:20crypto is a Node package intended to be run on the server and is tricky to run in the browser. rollup-plugin-node-builtins seems to be deprecated. Its successor states in the README that shimming the crypto package likely won't work:
Crypto is not shimmed and and we just provide the commonjs one from browserify and it will likely not work, if you really want it please pass {crypto: true} as an option.
You may need to find an alternative package that is intended to be used in the browser. Depending on your use case, you could also look into the native web crypto API.
QUESTION
So basically I want to make it so you can use the slider under the canvas to change the size of the brush, but everything I've tried isn't working. Can anyone help pls? Thanks
...ANSWER
Answered 2021-Jan-19 at 02:07Simply add an event listener to the change event of the slider like so
QUESTION
To bring back some memories I decided to sit down and code a little assembler game in VGA mode 13h - until the point I realized the visual output is flickering as hell.
At first I suspected it might be my clearscreen routine. Indeed by using a STOSW instead of writing a single byte to the video memory a time the flickering is less annoying but still present.
Digging some further I recalled I might have to wait for the vertical retrace and update my screen right after but that didn't make things much better.
So the final solution I'm aware of goes a little like this:
- do all graphical operations - clearing the screen, setting pixels - on a separate memory region
- wait for the vertical retrace
- copy the memory over to the video memory
The theory is of course simple but I just can't figure out how to do my writes to the buffer and ultimately blit it into the video memory!
Here's a striped-down - though working - snippet of my code written for TASM:
...ANSWER
Answered 2021-Jan-15 at 14:57The first problem is that you're in real mode. This means that you're working with 64 KiB segments. For "320*200 with 256 colors" the buffer will need to be 64000 bytes; and if you try to have a single data segment containing everything you'll only have 1535 bytes left for things that aren't the buffer (sprites, global variables, etc). It's too restrictive (sooner or later you're going to want animated sprites, or a level/map/background scenery, or ...).
The next problem is that you don't want 64000 bytes of zeroes in the executable file. Normally you'd use a ".bss section" to avoid that (a special area for "assumed initialized to zero" or "assumed uninitialized " data that isn't in the executable file).
To solve both of these problems; I'd allocate memory for the buffer (e.g. maybe using the int 0x21, ah = 0x48 DOS function) and have a special buffer segment. In this case blitting the buffer to video memory might look like:
QUESTION
This my first time running a Svelte app and I have this issue where the app doesn't seem to know where build/build.css and build/build.js are.
I got the same issue when I tried Svelte with Tailwind.
This is my config when I created the project:
...ANSWER
Answered 2021-Jan-06 at 12:49This looks very much like the official Svelte template. In this case, the command to build, watch, & serve is npm run dev.
npm start just runs the web server and serve existing files. You'd use it, for example to test your prod build after npm run build.
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