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QUESTION
I am building a gallery where you click on the image and it will load in a separate component using props, this image is a URL, taken from a hard-coded array, where the src is loaded as a background image via CSS. My challenge is connecting the data to that component. I have tried connecting the data from parent to child with callbacks, but no luck. I think what I am trying to do is connect components sideways, and I don't want to use redux, as I am not familiar.
Note: I am aware you can just load the image in GalleryContainer.js using window.location.href = "props.src/"
, however, I want the image to load in the Image component that will act as a container to hold the image giving the user other options such as downloading the image, etc...
Note: I have tried importing the Image component in Gallery.js and rendering it like so: , and I find the data connects just fine, but this does not help keep the component separate.
What I have already : I have a route in app.js that allows me to go to the image route path just fine it’s loading in the url from props.src in the image component that is my challenge
UPDATE: SOLVED Click here to see the solution!
Here is the code:
GalleryList.js
...ANSWER
Answered 2021-Jun-04 at 19:42You should be able to use the router Link
to pass data via "state" on the to
property.
From React Router's documentation:
QUESTION
I am trying to execute a dataflow pipeline from cloud functions on GCP using the Python sdk. Tested the code on a notebook server, where the pipeline works with DataFlowRunner. However, when using Cloud Functions to invoke the pipeline, I get the following:
Error ...ANSWER
Answered 2020-Apr-03 at 10:57Thanks for all your suggestions, in the end I did not find solution to the error but I did come to a solution for the workflow. As AMargheriti pointed out, there's always dataflow templates. By creating a custom template of the code I was able to trigger the flow using a cloud function. Useful documentation is the create dataflow template, the running templates page and lastly this solution because the suggested API on the running templates page does not allow setting a region where to run the template whereas dataflow().projects().locations().templates().launch() does allow this option to be added.
QUESTION
I am making a certain project that will require me to convert images into a fixed sized array of the per-pixel RGB values of an image. Reading the image is done as follows:
...ANSWER
Answered 2019-Dec-16 at 04:00What I am understanding is that you have many images that you want to store in RAM. The first question you need to ask yourself is if you actually need to store them all at the same time? For example, can you read one, do some processing, and then only keep the result of the processing before reading the next image?
When it comes to the actual storage, I do not understand why you need the var1
variable. Isn't image sufficient? If the point of var1 is to have all your images with the same shape, then why cannot you use pad? For example, imageNew = numpy.pad(image, [(0, x - y) for x, y in zip(arr1.shape, image.shape)])
.
If you cannot use numpy.pad, then would simply arr1[:image.shape[0], :image.shape[1], :] = image
work for you?
If you want to do it with loops, then use numba.
QUESTION
I'm making my portfolio. Whenever the user hovers over a certain tile, I want the cursor to change accordingly. When the user hovers over the element with the id "crystalCollector", it's supposed to change the cursor to "cursor2." However, this only seems to work on the border of the tile, whether "crystalCollector" is the id of the grid space or the thumbnail. Putting "!important" after it does not help either.
Here is the css of my page:
...ANSWER
Answered 2018-Oct-21 at 03:02For any children, if they have a set cursor
property, that's what's going to apply, regardless of specificity of rules set on parent for that property.
If you want the specificity of two rules to be compared (and the strongest one to apply), they both need to both apply to the same element.
For example:
QUESTION
I am using the div like below
...ANSWER
Answered 2018-Jan-28 at 03:53It is safe to assume that by fitting you mean covering all of the width. This is because
- You typically do not know the height just by using
col-sm-6
orcol-md-6
orcol-lg-4
. - There is a huge probability of loss in aspect ratio of the image if you try to resize it according to your own will.
Use for fitting the column. This will fit your image width-wise into the column and will automatically modify the height (keeping the aspect ratio in mind), so you do not have to worry about image getting illogically resized.
QUESTION
Greetings denizens of stackoverflow. I have a problem. I am trying to program something in my portfolio where each time I visit one of my projects, "you have visited X" is logged into the console when the user returns. For proof of concept, I tried this with my project called "train timer." However, it says, in the console, that I have visited train timer even if I haven't. This happens even when I clear my all my browsing data/history/whatever. What's the deal? Here is my code.
...ANSWER
Answered 2018-Dec-06 at 06:04The localStorage object stores data with no expiration date. The data will not be deleted when the browser is closed, and will be available the next day, week, or year. you need to forcefully remove the localStorage like
QUESTION
I'm writing integration tests for my Spring boot app Rest controller.
When I annotate the test class with @Transactional
it doesn't work as expected, and when I remove the annotation it passes fine.
Does using
@Transactional
on a test class mean absolutely nothing gets written to the db ? My other tests work fine ! They do more or less the same job. They write/update/read but this test tests a delete endpoint.If annotating a test class with @Transactional means there's no control on data persistence, why do people even use it on their tests ? I injected entity manager to the test class and called
flush
andclear
, it didn't help.Even if the data is not written to the db, they are persisted, right ? Doesn't calling
repository.delete
should delete that item from the persistence context ?The code that doesn't affect the db (delete) is located in the Service layer. It's called from within the Controller that I'm testing, not the test class. I expected it to work regardless of the fact that test class is annotated with
@Transacational
or not.
Note Service layer is @Transactional
This is in the service layer and is called by the controller. It's not called form within the test.
...ANSWER
Answered 2017-Aug-24 at 12:11It is rolled back when test is annotated with @Transactional
.
- Does using @Transactional on a test class mean absolutely nothing gets written to the db ? My other tests work fine ! They do more or less the same job.
Please post your other tests for more details.
- If annotating a test class with @Transactional means there's no control on data persistence, why do people even use it on their tests ?
To prevent filling database with test data.
- Even if the data is not written to the db, they are persisted, right ? Doesn't calling repository.delete should delete that item from the persistence context ?
Where do you check if an item was deleted from the persistence context?
- The code that doesn't affect the db (delete) is located in the Service layer. It's called from within the Controller that I'm testing, not the test class. I expected it to work regardless of the fact that test class is annotated with @Transacational or not.
Every method in the test is wrapped with Spring transaction so data may be not committed until the test ends.
Check for detailed answers:
QUESTION
I use ImageIO
to save Base64
image string to a file:
ANSWER
Answered 2017-Aug-14 at 04:24You are base64 decoding the string, using ImageIO to create a BufferedImage, converting it back to a PNG, and re-base64 encoding this result.
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