feather | a little compiled programming language
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a little compiled programming language
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QUESTION
I have the following piece of code in a shiny app. My goal is to generate the choices for the "cutFamily2" selectInput widget based on what the user chose for the "machine2" selectInput.
If I use corte2()
instead of eval(paste0("corte",2))
on the observerEvent
the app runs properly. The problem is that I want to use the paste0()
because the integer "2" in eval(paste0("corte",2))
will be an argument of a function (function(data,n)
) so I can easily generate corte1
, corte2
and so on.
When I run it using eval(paste0("corte",2))
I am getting the "error in $: $ operator is invalid for atomic vectors" and the app won't even run. I tried to use enframe()
to convert it to a tibble, then the app runs, but I get a "Unknown or uninitialised column: CutFamily
" error and the SelectInput choices will be empty. I also tried [[
instead, but nothing.
Any ideas on how to solve the problem?
...ANSWER
Answered 2021-Jun-15 at 15:12You can try this code -
QUESTION
I have paths that looks like this.
...ANSWER
Answered 2021-Jun-15 at 09:04For your first regex, you want:
^(?:[^\\]+\\\\){5}(\d+).*$
and for your second:
^(?:[^\\]+\\\\){6}(\d+).*$
if the paths truly include double-backslashes. If they are in fact single backslashes, the regex's should be ^(?:[^\\]+\\){5}(\d+).*$
and ^(?:[^\\]+\\){6}(\d+).*$
.
QUESTION
I have a div container that will layout each item evenly for the full width of the screen.
I would like to adjust the BACK div behind the selected input dynamically. I know in theory how to do it: do a transform: translate to #after of the BACK div. But I have no idea how to calculate the correct px value, depending on what input tag has been selected.
The codepen to view this is available here: https://codepen.io/depechie/pen/oNZagLa
The desired end result visually should be like following picture. So the BACK div ( the blue outline ) should be placed behind the selected input.
...ANSWER
Answered 2021-Jun-14 at 10:06Simply add a border on the selected element ?
QUESTION
I'm new to Django and trying to convert a HTML template to Django project.
This is my directory structure:
...ANSWER
Answered 2021-Jun-12 at 11:18Your TEMPLATES
setting is as follows (truncated to keep answer short):
QUESTION
What is the difference between Arrow IPC and Feather?
The official documentation says:
Version 2 (V2), the default version, which is exactly represented as the Arrow IPC file format on disk. V2 files support storing all Arrow data types as well as compression with LZ4 or ZSTD. V2 was first made available in Apache Arrow 0.17.0.
While vaex, a pandas alternative, has two different functions, one for Arrow IPC and one for Feather. polars, another pandas alternative, indicate that Arrow IPC and Feather are the same.
...ANSWER
Answered 2021-Jun-09 at 20:18TL;DR There is no difference between the Arrow IPC file format and Feather V2.
There's some confusion because of the two versions of Feather, and because of the Arrow IPC file format vs the Arrow IPC stream format.
For the two versions of Feather, see the FAQ entry:
What about the “Feather” file format?
The Feather v1 format was a simplified custom container for writing a subset of the Arrow format to disk prior to the development of the Arrow IPC file format. “Feather version 2” is now exactly the Arrow IPC file format and we have retained the “Feather” name and APIs for backwards compatibility.
So IPC == Feather(V2). Some places refer to Feather mean Feather(V1) which is different from the IPC file format. However, that doesn't seem to be the issue here: Polars and Vaex appear to use Feather to mean Feather(V2) (though Vaex slightly misleadingly says "Feather is exactly represented as the Arrow IPC file format on disk, but also support compression").
Vaex exposes both export_arrow
and export_feather
. This relates to another point of Arrow, as it defines both an IPC stream format and an IPC file format. They differ in that the file format has a magic string (for file identification) and a footer (to support random access reads) (documentation).
export_feather
always writes the IPC file format (==FeatherV2), while export_arrow
lets you choose between the IPC file format and the IPC stream format. Looking at where export_feather
was added I think the confusion might stem from the PyArrow APIs making it obvious how to enable compression with the Feather API methods (which are a user-friendly convenience) but not with the IPC file writer (which is what export_arrow
uses). But ultimately, the format being written is the same.
QUESTION
Currently I'm using Bootstrap 5 beta1.
But I face a problem. When I use tooltip with button it working good. But If I use tooltip with an icon (svg, feather icon), it's not working.
On another things. If I use tooltip with svg it working 1st time. Please check.
Here is my code:
...ANSWER
Answered 2021-Feb-11 at 22:17This worked for me as a temporary solution:
CSS:
QUESTION
I've seen a lot of posts dealing with issues in updating the UI in Blazor, but none of the previous methods I read worked. I am trying to replicate some of the Password Policy Validators I've seen in JavaScript. However, I am trying to do it in C# with Blazor. If I step through the code in Debug Mode it works perfect but going live I can't get the UI to update even with a StateHasChanged Request as seen below: Code:
...ANSWER
Answered 2021-Jun-03 at 23:42QUESTION
I wrote the shiny app bellow and it is working that way. It is a simple control to select a material from a list (a column from a tibble) and then output a table containing all the columns from that tibble, but just the row corresponding to the selected material. What I don't understand is why I have to create the reactive value (that I named "materialInfo") on the server function in order to update tableOutput("materialInfo")
on the dashboardBody.
Why won't simply output$materialInfo <- Material %>% filter({Material == input$matId}) %>% renderTable()
do the job? Any ideas? tks
ANSWER
Answered 2021-Jun-04 at 02:28The reason output$materialInfo <- Material %>% filter({Material == input$matId}) %>% renderTable()
it's not reacting, is because input$matId is called before entering the reactive content as common code, what get's piped into renderTable() is already 'processed' a.k.a evaluated.
QUESTION
I'm currently using stack navigation on my app, but I decided to increment a Drawer for a user's menu.
I managed to insert the Drawer in my pages, but some of them are a MapView content, so the user can't really drag the menu from the screen... So I decided to implement a button to call the ToggleDrawer function, which is presented in the documentation. But I'm getting the error:
TypeError: navigation.ToggleDrawer is not a function. (In 'navigation.ToggleDrawer()', 'navigation.ToggleDrawer' is undefined)
Here is my map screen where I'm trying to insert the button in like this:
...ANSWER
Answered 2021-Jun-03 at 17:46It's toggleDrawer
... not ToggleDrawer
QUESTION
I am working with the Gatsby starter 'YellowCake' which is has Netlify CMS as part of it.
I am trying to add another custom widget to the starters Contact Page. I would like to add "Fax" under "Phone". I have added it to the config.yml file and added a fax number to my contact.md file and I have added it to my ContactPage.js template. But it is not showing up on the page.
I am not sure what I am missing or doing wrong. Would love any help.
Config.yml
...ANSWER
Answered 2021-Jun-02 at 16:46You are not fetching the fax
field in your GraphQL query:
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