box-model | An interactive box model demo | Learning library
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An interactive box model demo
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QUESTION
When I run the objectbox_generator with flutter packages pub run build_runner watch
the classes are being generated in the JSON, but shortly after that the Generation fails due to a null check issue. I checked my code and couldn't find any null check issues. Is there a way to show more detailed logs (e.g. where it is located) ?
ANSWER
Answered 2021-May-26 at 13:04From the code it looks like you have a @Backlink()
to an unknown entity (one that is not stored in the DB)... try to check those backlinks (and comment them out to see if that works) and when you've found which one triggers this, consider opening an issue on objectbox-dart's GitHub with the minimal example.
P. S. as for the null check failure - yeah, needs a better error (one that tells you about the missing entity) - https://github.com/objectbox/objectbox-dart/commit/00aabe224eaa9bb88ab2bc18a5c31f00b4f3bdc0
QUESTION
Looking at the box-model the margin is the distance outside the element box (outside boarder), whereas padding is between the content and the boarder.
Say I have two child-elements inner-top
and inner-bottom
both conatined in outer
e.g
ANSWER
Answered 2021-Mar-19 at 09:40you can just remove "position: absolute" and "bottom: 0" from inner-bottom class and that way is working for me.
but if you never heard for flex this maybe is the moment you been waiting for :) here is the solution which is maybe better:
QUESTION
This page describes a drag-'n'-drop algorithm.
Looking only at the first snippet of code (which the article continually improves upon), it says it's important we use document
in document.addEventListener('mousemove', onMouseMove);
.
Is this because if we were to use ball
, there's a chance we might move the cursor so fast the cursor might leave the box-model of the ball before mousemove
would have a chance to execute again? We wouldn't be moving the mouse over ball
so mousemove
wouldn't re-fire.
ANSWER
Answered 2020-Sep-22 at 23:25Is this because if we were to use ball, there's a chance we might move the cursor so fast the cursor might leave the box-model of the ball before mousemove would have a chance to execute again?
Yes.
This will happen if you drag an object upwards when your drag-point is also the top row of pixels of the object.
This is less likely to happen if you drag a larger object from its centre and your computer has a mouse with a high poll-rate and a high display refresh rate and the browser is capable of processing OS-provided input events rapidly - so if you're a front-end dev using a high-end gaming machine (with a 1000Hz USB mouse and a 120Hz+ display) may not notice the problem compared to someone using a 100Hz mouse on a 30Hz display (which is a thing: many people run 4K displays over HDMI 1.x which can only run 4K at 30Hz).
Another scenario is when the user is using an absolute pointing device, such as a touch-screen or graphics tablet in absolute-mode (aka "pen mode" for Wacom) rather than relative-mode (aka "mouse mode" for Wacom) - if the user "drags" an object to somewhere else on the screen by only tapping the destination location with their finger (or by moving the stylus vertically outside the detection zone) then there will only be 1 mousemove
event which will not be captured by ball
at all.
QUESTION
Unfortunately, ObjectBox Go's docs provide no information about deletion of entire type structure "powered" by ObjectBox.
Let's say we have a struct
...ANSWER
Answered 2020-Sep-08 at 08:37Currently, the ObjectBox code generator doesn't delete entities because it works with partial input information (a single file at a time) and therefore it doesn't know whether you have removed an entity or it will be in the next file the generator is called for.
I've created a follow-up issue/feature request on GH: https://github.com/objectbox/objectbox-generator/issues/22
If you really needed to remove the entity NOW, until the removal feature is added to the generator: the current workaround, would be to manually update the objectbox-model.json
, removing the entity JSON code block defining it and adding its uid
to the retiredEntityUids
list to avoid reuse of the same UID (which would break things). Additionally, the same has to be done for the removed properties, indexes, and relations (each has its retired*Uids
list). After the generator is re-run, the entity would be removed from the objectbox-model.go
.
I don't recommend doing this as it's easy to make an error when manually editing the model JSON file, potentially causing a loss of data. If you can, wait for the generator to support the removal.
QUESTION
I am trying to build a simple web dashboard with plotly and dash. Here is the structure I am trying to get:
...ANSWER
Answered 2020-Jun-20 at 10:15You have wrapped the children of the most outer Div
in a list twice, both inside the Build_home_page
and in the layout definition, you should remove one of them. Removing the latter, the layout definition would be
QUESTION
In my app I have the two Entities CardEntity
and DeckCard
. I want to remove CardEntity
completely, and update DeckCard
to no longer reference it.
ANSWER
Answered 2020-Feb-14 at 15:32Update: the observed behavior could not reproduced with the current version of ObjectBox (e.g. 2.5.1), but with an old version (2.0.0).
Summary:
- You intend to "merge" the properties of two entity types into one
- CardEntity is dropped
- DeckCard gets two additional properties and drops the ToOne to CardEntity
QUESTION
I'm using VueJS and have nested elements which are dynamically created like so:
...ANSWER
Answered 2019-Sep-11 at 01:47Try using CSS display:contents
on the outer
element. This display property basically makes the element "invisible" to the browser.
However, I think you'd be better off by refactoring your Vue template to remove the outer element. For example, you could process the objects array to combine its children before doing the loop.
QUESTION
I need a little bit help.
I would like to create the box-model like in the image, can someone help me.
I already have written code, but I don't know how to do to better.
...ANSWER
Answered 2019-Sep-04 at 10:02CSS Grid is much better for what you need
for example :
QUESTION
I'm messing around with the background origin property buy it doesnt seem to be working why? From my understanding background-origin dictates the paint area of the box-model, I would assume this should show the blue padding but it's not and I'm sure what it is that I'm doing wrong. https://jsfiddle.net/36trf972/18/
...ANSWER
Answered 2017-Jun-26 at 05:08You need to remove the property:
QUESTION
Summary: I have three main divs within the body tag of my website, the first two have one element of fixed dimension. I want the third div to take up 90% the remaining width and to be centered.
Detail: I have a website that has three main divs within the body tag. The divs, and relevant details, are as follows:
- nav-top: should span the full width of the page, stay in place when scrolling (position: sticky), and be 50px in height
- nav-left: should span the full height of the page (offset by 50px to sit below #nav-top), be 50px wide, and stay in the same place at all times (position: fixed)
- body-content: should have its entire box-model contained within the remaining space left by #nav-top and #nav-left. Of this remaining space, it should take up 90% of the width and be centered horizontally
The #body-content is the div I'm having issues with, the box-model is starting from the edge of window, effectively underneath #nav-left.
I feel this should be a fairly simple problem to solve, but I'm struggling to get it working as expected. There WILL need to be responsive elements for this website, but for now I can't even get this issue resolved.
...ANSWER
Answered 2019-Jan-24 at 13:49The best way I can see would be wrapping the nav and content in a flexbox:
HTML:
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