grim | Grab images from a Wayland compositor | Video Utils library
kandi X-RAY | grim Summary
kandi X-RAY | grim Summary
Grab images from a Wayland compositor. Works great with slurp and with sway.
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QUESTION
Authors of Node.js Design Patterns suggest this code as a sample of an operation that schedules asynchronous tasks from some queue array and at once keeps a number of running async tasks below a limit (concurrency) (I made the authors example simpler):
ANSWER
Answered 2021-May-14 at 23:27The overall rule here is this: "If a callback is EVER called asynchronously through any code path, then it should always be called asynchronously, even if the result or error is known synchronously."
This is because you NEVER want an API that sometimes calls its callback synchronously and sometimes asynchronous. That makes it very easy for the caller to end up with hard to find and reproduce bugs that only surface when the API itself sometimes calls things synchronously or sometimes calls them asynchronously or sometimes call it one way the first time and then another way the second time.
Here's an example I've seen in the nodejs streams code. There is an API in the streams code that accepts an asynchronous callback. But, as the API starts to process things, it finds that it already has in its buffer the required data to satisfy the API request. It could call the callback synchronously because it already has the data. But, other times, it will have to read data from the disk before calling the callback and thus the callback will be called asynchronously. In the streams code, when it encounters this case where it already synchronously has the data, it still queues the callback to be called on the nextTick because it needs to consistently only return the data asynchronously.
Similarly, sometimes, as part of the setup code for a particular stream API, it encounters an error and that error is known synchronously. Again, it only calls the callback with the error on a nextTick so that it is again being consistent and always calling the callback asynchronously.
But, don't take this too far as this does not mean that every single callback should only ever be called asynchronously on a future tick. It's perfectly OK to have a callback that is always called synchronously as long as the API explains that and the caller expects that. Heck, all the array iteration functions like .map() or .filter() do exactly that and work just fine for what they do and they are massively simpler to use because of their synchronous nature.
In the context of your specific code you show, doing:
QUESTION
Edit 2: Updated to take care of the problems from the dput output.
I don't know why the dput output is not working, so here is a roundabout way of sharing the data.
A simple zip file of the data can be downloaded from here: link to zip file
The following code should then represent the data I was trying to share. Note that you will need to replace the path name for the downloaded zip file, and that the parse_file function will create a temporary directory:
...ANSWER
Answered 2021-Mar-28 at 01:10Use map in parse_text function so that you get lists separately.
QUESTION
ANSWER
Answered 2020-Dec-14 at 08:37I moved from OPS4j to Aries CDI on Karaf. Here is the how-to:
QUESTION
I have raised the SO Question here and blessed to have an answer from @Scott Boston.
However i am raising another question about an error ValueError: Columns must be same length as key as i am reading a text file and all the rows/columns are not of same length, i tried googling but did not get an answer as i don't want them to be skipped.
ANSWER
Answered 2020-Oct-06 at 01:06I couldn't figure out a pandas way to extend the columns, but converting the rows to a dictionary made things easier.
QUESTION
I am reading a file called kids_csv with header=None option, this file contains every row with specific alphabets along with : like ab:, ad: etc, I want the entire row to become a column where like ab: that's starting off the line needs to be designated as a column name.
below is my dataframe:
...ANSWER
Answered 2020-Oct-05 at 16:11Try this:
QUESTION
I post here a specific problem using a library (grim) in Nim, but the underlying concepts are still not super clear to me so I appreciate a solution coming with an explanation.
I would like to make a procedure returning a node. The example below is not really useful but makes the point: I want to return node but I apparently don't know what type it is.
ANSWER
Answered 2020-Aug-20 at 18:00You probably installed the grim library through nimble install grim. That gave you the grim-0.2.0, released early this year. The point is that Node was private in that release, so your code cannot access it.
You can opt to install the latest code, which at some point this year made Node and others public, with:
QUESTION
I'd like to use the grim library to create and traverse graphs, but I don't understand how to access a graph having the label in a string.
...ANSWER
Answered 2020-Aug-19 at 16:03This library inserts the nodes with an oid. If you add a node without oid, it gets automatically generated, and it will be the index to look for in g.node(oid). But you can force a given oid, e.g.
QUESTION
While I was working on a project with a colleague of mine, that involved using the package dplyr from tidyverse to manipulate a data frame, I've noticed that some of our results ware different even though we ware using the same code and the same data.
Session infos from both R sessions:
Desktop:
...ANSWER
Answered 2020-Jul-16 at 19:29You're using sample, which is using a discrete uniform distribution.
In R's PR#17494 (and associated mailing-list thread), a problem with non-uniform sampling was discussed and fixed. This went into effect in R-3.6.
This can be demonstrated simply:
R-3.5.3-64bit (win10)
QUESTION
I have a maven project (a)
This is the Project-tree:
...ANSWER
Answered 2020-Jul-21 at 20:42Ok, there might was a bug in surefire 2.20. It does not work prior to version 2.21.0.
So all I had to do is to
QUESTION
I am working on angular app. I want to array of objects from one component to another using service. I am using the following link Pass array of int in Angular Route
PassData.html
...ANSWER
Answered 2020-Jul-17 at 19:57Demo use BehaviorSubject
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