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I am trying to create a draggable Material UI dialog which includes in its contents an Autocomplete component. The result should look something like the following:

The desktop experience here is that when one drags the dialog (by grabbing the title area), the text field loses focus, and so the options Popper immediately disappears. However, the touch experience (tested iPhone 6 and iPad 7) is broken in that the text field remains focused while dragging, and so the popper doesn't disappear but also doesn't drag with the dialog:

Notice as a further weirdness that the text cursor (circled) lines up with the text field every time the dialog is grabbed but then does not move while the dragging is happening (this bug exhibits even without Autocomplete, so maybe beyond the scope of this question, but thought I'd mention for completeness).

I think I understand why this is happening: The popper is a child of body in the DOM and not the draggable Paper element, so it isn't being targeted the way one would naively hope. However, the fact remains that it is happening, and I would like a way to fix it, if possible.

Note that a bug has been filed here.

Code below:

Wracking my brains on this one but I'm sure it's just my inexperience with js.

I have a list of items and I am trying to create an eventListener for each item row so when I mouseover the row some icons will appear. The icons should hide again on mouseout.

I am using setAttribute to change the opacity of the elements on mouseover and mouseout events.

My problem is after the loop runs to create the eventListeners the setAttribute only affects the very last row of the loop - regardless of which row I mouse over.

I have a JSFiddle here which shows you the exact behaviour (better than I can explain): https://jsfiddle.net/Finno/ds9q7zju/27/

Note: this is a simplified example but it exhibits the same behaviour. My real app has the items formatted in a drop down menu.

Here is the code :

I have a kafka-topic and I would like to feed it with AVRO data (currently in JSON). I know the "proper" way to do it is to use schema-registry but for testing purposes I would like to make it work without it.

So I am sending AVRO data as Array[Byte] as opposed to regular Json objects:

I am using the ".fileImporter" modifier in a SwiftUI view; it works great, except for one very annoying issue that I have not been able to find a solution for anywhere.

The "picker", which is bound to a state variable showFileImporter as required by the documentation (initially set to false), and configured to allow multiple selection, is presented by "toggling" the state variable when the user taps a button. Up to this point, all is good: the picker presents, I can effectively pick files (and get the corresponding URLs collection onCompletion), which in turn dismisses the picker view and sets the bound state variable showFileImporter back to false, as it should. Also, if after presenting the picker the user taps the Cancel button on the view UI, the picker is appropriately dismissed and the bound variable set to false- again, as it should.

The issue comes when you dismiss the picker by tapping outside the picker view.

The picker gets dismissed, alright, BUT the bound variable DOES NOT get updated - thus, in my case, the user has to tap the "pick files" button twice in order for the picker to preset itself, obviously because when dismissed in this way the value of the showFileImporter state variable is not updated and the toggle action on it triggered by tapping the button will set it to false "first", and then to true on the second tap, which then triggers the picker presentation.

Anyone has any idea if this is a bug? Am I doing something inherently wrong, or missing something? Just for completion, I am including a sample code that exhibits this behaviour:

I'm trying to train an autoencoder, with constraints that force one or more of the hidden/encoded nodes/neurons to have an interpretable value. My training approach uses paired images (though after training the model should operate on a single image) and utilizes a joint loss function that includes (1) the reconstruction loss for each of the images and (2) a comparison between values of the hidden/encoded vector, from each of the two images.

I've created an analogous simple toy problem and model to make this clearer. In the toy problem, the autoencoder is given a vector of length 3 as input. The encoding uses one dense layer to compute the mean (a scalar) and another dense layer to compute some other representation of the vector (given my construction, it will likely just learn an identity matrix, i.e., copy the input vector). See the figure below. The lowest node of the hidden layer is intended to compute the mean of the input vector. The rest of the hidden nodes are unconstrained aside from having to accommodate a reconstruction that matches the input.

The figure below exhibits how I wish to train the model, using paired images. "MSE" is mean-squared-error, although the identity of the actual function is not important for the question I'm asking here. The loss function is the sum of the reconstruction loss and the mean-estimation loss.

I've tried creating (1) a tf.data.Dataset to generate paired vectors, (2) a Keras model, and (3) a custom loss function. However, I'm failing to understand how to do this correctly for this particular situation.

I can't get the Model.fit() to run correctly, and to associate the model outputs with the Dataset targets as intended. See code and errors below. Can anyone help? I've done many Google and stackoverflow searches and still don't understand how I can implement this.

Inspired by my (currently deleted) answer to this question (but there's a summary in my comment thereto), I was wondering whether the constructor for the Derived class in the code below exhibits undefined behaviour.

Below is a demo program (a bit long, but it is hard to make a wxPython app short) that exhibits my difficulty. The program asks for input in 2 text fields. Each text field has 2 handlers, that are supposed to trap the events EVT_TEXT (hander on_text_changed()) and EVT_KILL_FOCUS (handler on_focus_lost()).

When I type in either field, the handler on_text_changed() gets called and prints the expected message. I expect that when I tab between the two fields, or click on a field with a mouse, the handler on_focus_lost() should get called for the field that the lost the focus. But it doesn't get called. So either I have a poor grasp of what the event is for, or the way I have set up the event handler is wrong.

What am I missing here?

Built a portfolio page with Gatsby / GraphQL, using styled components. On my local machine, it looks and functions exactly as I want it to. When deployed, there seem to be button style issues and one of my images isn't rendering at all. I tried deploying on both Netlify and Surge.sh, but had the same result both times. What am I doing incorrectly? Edit: could my button styles be affected by how Link is used?

Here are how my button styles look locally:

Here's how they look deployed ('View Repo' doesn't even work deployed):

My 'About Me' section locally (2 columns):

My 'About Me' section deployed (only column 1 shows):

gatsby-config.js

I have a question about C++ initializer list disambiguation which exhibits different behaviors between gcc, clang and Visual Studio.

I wonder if this is "undefined behavior" (incorrect program) or if one of these compilers has a bug. Any idea?

Consider the following declarations: