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I have just started a new project using Bootstrap 5 and I am trying to set up theme-colors with some custom values. However doing it the way that I have always done it is giving me some issues.

I have created three colors: $primary, $secondary, $tertiary. However if I add any classes such as bg-tertiary, then nothing changes as if it doesn't exist. bg-primary simply uses the default color defined by Bootstrap.

My code below:

I've written and optimized a Shiny app, and now I'm struggling with the IT section of the organization where I work to have it published on their servers. Currently, they are claiming that the app is not W3C compliant, which is true, according to the W3C validator.

The errors I'm trying to solve, with no success, are:

• Bad value “complementary” for attribute “role” on element “form”.

• The value of the “for” attribute of the “label” element must be the ID of a non-hidden form control.

Such errors can be seen also in very minimal shiny apps, like:

I have a model in which we can choose the opening hours of the institution for each day of the week, from such and such to such and such, for example Monday 12:00 AM - 11:30 PM

I am using AvForm in React js. I want to reset the form after form Submission. But I am unable to reset the code unless I refresh the whole page. Whenever the form submits it retains the old value but not reset the fields

form.js

Wanted to implement type safe matrix multiplication in Haskell. Defined the following:

This has to be dead simple and I'm unhappy I can't figure it out at this point in my Haskell experience. I want a cartesian product of a list with itself, but I want to filter out identical items. I don't want a post filter.

This gets me the CP - seemingly set up to simply add a filter...

I was looking for the canonical implementation of MergeSort on Haskell to port to HOVM, and I found this StackOverflow answer. When porting the algorithm, I realized something looked silly: the algorithm has a "halve" function that does nothing but split a list in two, using half of the length, before recursing and merging. So I thought: why not make a better use of this pass, and use a pivot, to make each half respectively smaller and bigger than that pivot? That would increase the odds that recursive merge calls are applied to already-sorted lists, which might speed up the algorithm!

I've done this change, resulting in the following code:

My foreach loop dont work. It brings me only 1st item info when i use $arr in my foreach loop but when i change that to $value it gives me nothing :(

On Google Flights, search information is encoded in a URL parameter, presumably so users can share flight searches with each other easily. The URL format looks like this: