vdl | A cross-platform GUI | Download Utils library
kandi X-RAY | vdl Summary
kandi X-RAY | vdl Summary
A cross-platform GUI for youtube-dl and yt-dlp. Download videos from youtube.com and many more sites. Choose any available format up to 4K. Download multiple files simultaneously. Create subscriptions and don't miss anything from your favorite channels.
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Top functions reviewed by kandi - BETA
- Initialize the Stage
- Initializes the search control
- Initialize text area
- Initialize the single search text field
- Download new version
- Show an INFO message with the given resource
- Initialize the stage
- Creates the tree item
- Creates the context menu for a single row
- Prompts the path to a recent download path
- Updates the progress bar
- Initialize the button
- Creates a new download task
- Creates the download task
- Initialize the queue items
- Creates the playlist search task
- Initialize service
- Creates the context menu for multiple rows
- Update the content pane
- Update the current version
- Initialize columns
- Creates a context menu for single row
- Initialize the downloader combo box
- Initializes the stage downloader
- Handle a save button click
- Creates a download task
vdl Key Features
vdl Examples and Code Snippets
Community Discussions
Trending Discussions on vdl
QUESTION
I would like to share data (in the simplest case an array of integers) between C and Haskell using Haskell's FFI functionality. The C side creates the data (allocating memory accordingly), but never modifies it until it is freed, so I thought the following method would be "safe":
- After the data is created, the C function passes the length of the array and a pointer to its start.
- On the Haskell side, we create a
ForeignPtr
, setting up a finalizer which calls a C function that frees the pointer. - We build a
Vector
using that foreign pointer which can be (immutably) used in Haskell code.
However, using this approach causes rather non-deterministic crashes. Small examples tend to work, but "once the GC kicks in", I start to get various errors from segmentation faults to "barf"s at this or this line in the "evacuation" part of GHC's GC.
What am I doing wrong here? What would be the "right way" of doing something like this?
An ExampleI have a C header with the following declarations:
...ANSWER
Answered 2021-May-25 at 06:24Copied and extended from my earlier comment.
You may have a faulty cast or poke
. One thing I make a point of doing, both as a defensive guideline and when debugging, is this:
Explicitly annotate the type of everything that can undermine types. That way, you always know what you’re getting. Even if a poke
, castPtr
, or unsafeCoerce
has my intended type now, that may not be stable under code motion. And even if this doesn’t identify the issue, it can at least help think through it.
For example, I was once writing a null terminator into a byte buffer…which corrupted adjacent memory by writing beyond the end, because I was using '\NUL'
, which is not a char
, but a Char
—32 bits! The reason was that pokeByteOff
is polymorphic: it has type (Storable a) => Ptr b -> Int -> a -> IO ()
, not … => Ptr a -> …
.
This turned out to be the case in your code! Quoth @aclow:
The
createVector
generated by c2hs was equivalent to something likealloca $ \ ptr -> createCVector'_ ptr >> peek ptr
, wherecreateCVector'_ :: Ptr () -> IO ()
, which meant thatalloca
allocated only enough space to hold a unit. Changing the in-marshaller toalloca' f = alloca $ f . (castPtr :: Ptr ForeignVector -> Ptr ())
seems to solve the issue.
Things that turned out not to be the case, but could’ve been:
I’ve encountered a similar crash when a closure was getting corrupted by somebody (read: me) writing beyond an array. If you’re doing any writes without bounds checking, it may be helpful to replace them with checked versions to see if you can get an exception rather than heap corruption. In a way this is what was happening here, except that the write was to the alloca
-allocated region, not the array.
Alternatively, consider lifetime issues: whether the ForeignPtr
could be getting dropped & freeing the buffer earlier than you expect, giving you a use-after-free. In a particularly frustrating case, I’ve had to use touchForeignPtr
to keep a ForeignPtr
alive for that reason.
QUESTION
I am trying to build Fuchsia OS
and run it on the Fuchsia Emulator femu
, but after waiting for the emulator to start the fx
command exists and displays the error below.
ANSWER
Answered 2021-May-16 at 08:00It seems that the network configuration scripts /etc/qemu-ifup and /etc/qemu-ifdown are missing. You can work around it by installing the qemu package:
$ sudo apt install qemu
QUESTION
So I am trying to get started developing on Fuchsia and I wanted to get the hello world component to run. However, following these steps doesn't work for me. I'm using core.qemu-x64 running on an Ubuntu 20.04 VM with Virtual Box. I have gotten the emulator to run with fx qemu -N
but fx vdl start -N
hasn't worked for me.
I run fx serve-updates
but it just outputs "Discovery..." and never changes. Then I try to run fx shell run fuchsia-pkg://fuchsia.com/hello-world-cpp#meta/hello-world-cpp.cmx
but it says "No devices found." It seem like this shouldn't be an issue because with Linux the device finder should automatically pick it up. Regardless I tried following the MAC instructions and setting the device with fx set-device 127.0.0.1:22
. That just makes the run command say "ssh: connect to host 127.0.0.1 port 22: Connection refused". I also tried to set it to the device to the nodename outputted by the fx qemu -N command
which is "fuchsia-####-####-####" but that just makes the run command say no devices are found again.
I have verified that I actually have the hello-world packages with the fx list-packages hello-world
which outputs all the hello-world packages as expected.
Is there any way I can get the device to be discoverable by the shell command? Alternatively, can I run components like the hello-world component from the qemu emulator directly?
Please let me know if I can provide any additional information.
...ANSWER
Answered 2021-Apr-10 at 15:38I guess I just wasn't patient enough. I assumed the emulator was done getting setup because it stopped giving console output and it allowed me to input commands but it seems I just had to wait longer. After 50 minutes of the fx qemu -N
command running, the terminal that had fx serve-updates
going finally picked up the device. Then I was able to execute the hello world component. It would be nice if the documentation at least gave an idea of how long the different commands would take before they'd be usable.
QUESTION
So I'm trying to run my fuchsia emulator but I keep running into the same problem. I'm running on a Virtualbox VM of Ubuntu v20.04. I set up and built core.qemu-x64 according to the getting started instructions on fuchsia.dev website. However, whenever I run fx vdl start -N
while in the fuchsia directory I just get "[info] Waiting for emulator to start..." which it repeats endlessly. Looking at the logs it shows the error message "Reading sdk version errored: No such file or directory (os error 2)". This seems like why the emulator is failing to start. Looking online it seems to be a problem with how this version of Ubuntu resolves certain imports.
Is there a way I can start the emulator that would tell me what file(s) this error is coming from so I can manually resolve it? Otherwise, is there another solution that could fix this issue?
Thank you for any input, please let me know if I can provide any additional information.
Below is a screenshot of the output:
Edit:
I tried fx qemu -kN
and got this output but no change to the original start behaviour:
I also tried fx emu
and got this output, still no change to the original start:
ANSWER
Answered 2021-Mar-29 at 20:12So I was able to resolve it eventually and first of all, I'd recommend increasing the allocated RAM of your VM. I went from 2GB to 7GB and I'm pretty sure that resolved part of it. Then continue with Marco's recommendations. The command fx qemu -N
(or fx qemu -Nk
if you have kvm enabled) seemed to do it for me. After I ran that I got another error message with a different command to run. Once I ran that new command and reran fx qemu -N
it seemed to start working. Finally opening another terminal and starting fuchsia with fx vdl start -N
made the emulator start up just fine. Thanks for the help everyone!
QUESTION
I have a measurement device PCE-VDL, which gives me measurements in following CSV format below, which I need to import to OCTAVE for further investigation.
Especially I need to import last 3 columns with xyz acceleration data. The file is in CSV format with delimiter of semicolon ";".
I have tried:
...ANSWER
Answered 2020-Nov-20 at 06:05You can first read the data with fileread
, which stores the data as a string. Then you can manipulate the string like this:
QUESTION
ANSWER
Answered 2020-Jun-28 at 16:09To validate if the radiobutton with text as No is selected or not you can use the following xpath based Locator Strategy:
Using preceding:
QUESTION
I want to get the value from the nested json and using retrofit. The value for both LicenseCDL and LicenseVDL classes are null. How to get the data from both array? Where did I missing from the java class?
This is the Json looks like.
...ANSWER
Answered 2020-May-18 at 04:14LicenseCDL and LicenseVDL are inside "data" key So you need to Update the Classes
QUESTION
I have a static table view with cells that have a rounded border. I have noticed when testing on different simulators that whilst my auto layout constraints work, the border isn't always the right width. This particular screen consists of a view controller with a UIView
containing an embedded tableViewController
I have done some investigating and found that the width of the border actually depends on the width of the storyboard phone. This means if I have a storyboard for an iPhone 8, the 8+ will have cells too short and vice versa, an 8+ storyboard results in cells that are too long (and extend off screen) for the 8.
Currently I am setting the cell borders in the viewDidLoad, here is the code I am using to configure the cells border:
...ANSWER
Answered 2017-Dec-13 at 10:59So it turns out I was using the wrong method to do this. I found this question which solved my whole issue. Basically if you need to perform UI calculations (such as adding custom views) you should be performing them in -(void)viewDidLayoutSubviews
. This method is called after the view has worked out all of its sizing and constraints so anything you do in here will be executed using the right properties of your view!
QUESTION
I'm banging my head around async promises recursion. I have bunch of promises that resolve when async data is download (combined by Promise.all). But sometimes in the data that I just download there is link to another data, that must be download (recursion). The best explanation is showing code I guess. Comments are in code. (I have tried various combinations to no avail.)
...ANSWER
Answered 2019-Oct-07 at 21:37The await keyword can massively simplify this. You won't need to use a self recursive function. This demo fakes the server call with a randomly sized array.
QUESTION
This is my ViewController (no changes to other files):
...ANSWER
Answered 2019-Oct-14 at 05:36When you close the app in simulator, you break the connection with the debugger.
P.S. You didn't call super
in viewDidAppear
.
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