bdk | A modern , lightweight , descriptor-based wallet library | Cryptocurrency library
kandi X-RAY | bdk Summary
kandi X-RAY | bdk Summary
The bdk library aims to be the core building block for Bitcoin wallets of any kind.
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QUESTION
I am trying to upload and retrieve image to and from mongodb through nodejs and mutter. But i am stuck some where, i hope i am succeeded in uploading image as binary data. but not displaying image in my .ejs file.
Routes file
...ANSWER
Answered 2022-Mar-10 at 12:32in the template, just add the properties:
edit: Buffer.from
is not needed, as it's already a buffer:
with for loop:
QUESTION
My goal
I am making a UI that has an image at the top, and four buttons below it, arranged vertically. The height of the image depends on its width, but it shouldn't be too tall that there isn't enough space for the buttons. After the image is positioned, the buttons can fill up the rest of the space. Horizontally, The image should try to take up as much of the width of the screen as possible, but the buttons should have a constant width of 300 and be centered horizontally. I understand that this is a bad idea for localisation, but I don't plan on localising this app.
A picture is worth 1000 words:
I have only used the stack overflow logo to replace the actual image that I will be using. I am not making a Stack Overflow-related app.
Also, the image view should be on the left of the buttons when the vertical size class is compact (the buttons are still vertically arranged).
I think I basically wanted a stack view whose subviews are aligned differently - the image view is aligned with "Fill", and the buttons are aligned with "Center". However, I don't know how to do that, so I tried to use nested stack views to work around this.
How to reproduce:
The outer stack view top/bottom/leading/trailing all are pinned to the VC's view, alignment set to "Fill", distribution set to "Fill Proportionally". I chose "Fill Proportionally" because I found that works the best if I use a large enough image. I added a variation on the outer stack view's axis, so that it is set to horizontal when vertical size class is compact.
The outer stack view has 2 arranged subviews - the image view and the inner stack view, whose distribution is set to "Fill", alignment is set to "Center".
The inner stack view then has those buttons. Each button has a constant width constraint.
I thought that should do the job. When I run the app, I see some "unable to satisfy constraints" warnings:
...ANSWER
Answered 2021-Apr-18 at 15:29OK - based on the image you posted, I'm going to use a 2:1
aspect ratio for your "Logo Image"...
Start with a "basic" layout:
Here's the constraints:
the Outer StackView
properties:
and the Buttons StackView
properties:
At this point, we should be "good to go" with "portrait" layout.
Let's add some trait variations...
To get this layout:
We'll add `Width: Any / Height: Compact" for the Axis and Alignment of the OuterStack:
and we'll add `Width: Any / Height: Compact" for the Alignment of the ButtonsStack:
If we run that (iPhone 12 sim), we get this:
We're close, but... we get a whole mess of auto-layout warning / error messages in the debug console.
That's because (from my experience) auto-layout needs to make multiple "passes" to fully evaluate the layout, particularly when using Aspect-Ratio constraints mixed with Stack Views.
To get rid of that, we'll give the Image View's Aspect-Ratio constraint a less-than-required Priority
:
This, effectively, allows auto-layout to break constraints during its multiple layout passes.
Here's an entire Storyboard source so you can more closely inspect things:
QUESTION
I am working with large product data API. I am getting a large number of product data in the form of a Multi dimension array.
In my code, I have 130 Categories. Every category has some number of Products listed under it. The product listing I am getting is as below (I copied some portion of my array):
...ANSWER
Answered 2020-Jul-21 at 14:30PHP lack array_flatten function but you can compose it like
QUESTION
I'd like to calculate % of stocks above rolling mean, therefore, I need to group the data by 'Date' and want to keep the 'Date' column. Percentages are calculated correctly, however, instead of actual dates I'm getting 'NaN' values. The 'Date' column is not the data frame index.
...ANSWER
Answered 2020-Jan-09 at 16:02You have to remove the 'Date'
from the [ ], you are already grouping by it. And don't drop the index, Date
is your new index in your returning dataframe and you want to keep it
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