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QUESTION
Cannot change value of parameter using button.
...ANSWER
Answered 2021-Apr-25 at 21:14You are missing to access the time_id when comparing currentTimeId with jAllTimeIdsInt[i]. Also, time_id is missing when you assign currentTimeId inside of the if statements.
For example in the getNextMap method.
QUESTION
I have question about insertion and deletion speed of queue in c++ STL.
When i tried to slove algorithm question using Dequeue i made, i face running time out problem.
So i think my Dequeue is so slow, and i want to know what is the difference between my Dequeue and queue in c++ STL.
Here is my queue code.
Please give me some advice.
In this code, i suppose value in Node class can't have negative number.
ANSWER
Answered 2021-Jan-06 at 06:16You Dequeue is implemented via a linked list, where nodes are allocated/deallocated in each push/pop operation. std::queue is implemented via a std::deque, which is much more efficient (it allocates only once a while).
Linked lists are good if you need to insert in the middle, but this is not your case. std::deque is basically a dynamic sequence of fixed-size arrays.
Relevant questions:
QUESTION
I have a function to withdrow some recored I can click the withdrow from the list page and the details..So,I want to check first what is the current path inorder to getback to it after showing message.
I have used the next method to handle that it is working fine for the details page but for the list page it is not working if the url contain ex.?page=2 it will show Page not found 404
template
...ANSWER
Answered 2020-Nov-02 at 00:18You should |urlencode [Django-doc] the path, since this can contain characters like ? and & that needs to be escaped as well:
QUESTION
Hellow,
I have a long list of user infos stored in sessionManager. I am looking for the best way to update the user information without having to create again the createUserSession
I have that session manager class:
...ANSWER
Answered 2020-Jun-25 at 11:44Just Make separate function for this like
QUESTION
I'm having some performance issues related to my implementation of voxel land generation.
I've separated the cubes into chunks of 16x16, and am building these chunks as 1 individual model instance to render. The only faces created for each chunk are the ones exposed to air (meaning no neighboring block on that side).
For some reason I'm only getting about 26-32 FPS when looking at all 36 chunks rendered. If I only render 4 chunks, I get over 300 FPS. I'm trying to figure out what optimization I'm missing in order to get a reasonable FPS considering not much is being rendered.
This is my render code for the world.
...ANSWER
Answered 2020-Jun-03 at 03:48You are creating a MeshPart instance per every block face. Each of them potentially has different material bound to it. That results in one render call + texture bind per every single block face.
Proper voxel renderer would aim to have one render call per whole chunk or chunklet per render pass. You are potentially doing several thousands of render calls per chunk.
Do not create multiple Mesh/MeshPart instances per chunk. Keep just single one and append face vertices to it instead.
You should also ditch Model/Mesh Builder, it's not optimized for your use case.
Take a look at LibGDX voxel demo: https://github.com/libgdx/libgdx/tree/master/tests/gdx-tests/src/com/badlogic/gdx/tests/g3d/voxel
You should take this approach. It doesn't have textures though, but if you want to add textures: create a texture atlas with all your block textures and then refer to their (texture regions) uv coordinates in vertex data.
Alternative to texture atlas is a technique called bindless, where you bind all textures at once to multiple units and refer to those (their unit) from vertex data.
QUESTION
I want to have three divs on the same height and fill them with content. When I try to add a p-tag in the first div it is not aligned on the same height as the others:
...ANSWER
Answered 2020-May-24 at 09:12You can add display: flex to the parent container
QUESTION
I am trying to create a basic airport simulation using two queues. They are supposed to alternate between taking off, and when one has no more 'planes' left, the NPE needs to be handled so that the other queue can continue going until the loop has finished and both queues have run out, as one has 7 entries and the other has 4. I thought if I tried to put an exception handler in the dequeue method it might fix it, but I have to use a generic class for it, so that didn't work properly. As of right now the for loop that is meant to dequeue runs until the 4th loop, which is when it stops, throws the NPE, and exits the program. So my question is, how can I make it so that when one queue runs out, it stops trying to loop it and instead continues looping the last queue?
Here is my main class where the loop is running:
...ANSWER
Answered 2020-Mar-12 at 21:23The issue is that your isEmpty() method doesn't work the way you want it to. You are using it as if it checks whether there is anything in the queue, but it is written to do something else. Assuming your length() method is correct, you need to check whether length() == 0. If it does, then you should return true. If not, you should return false.
The reason you are getting a NullPointerException is because you are assuming your list isn't empty when it is, so you try to access the next thing in your queue, which is null
In code, it would look like this:
QUESTION
I am get confused to pass value from view to window,
I have a view contain the user info and one button on which click a new window opens to upload an Image file. the image upload code I done in window. But I want to pass User Id with the image which I want to post on server. the user Id I on View. I want to carry that userId on file upload window. How can I do this?
Bellow is my code. file upload view
...ANSWER
Answered 2017-Jan-11 at 08:27Well, you pass the user id on initialization of the uploadWinPanel like so:
QUESTION
So I am working on a project involving Linked Lists. We have to make the Nodes and the Linked Lists ourselves (not allowed to use the Java provided ones). As part of the project, I am making a list that will automatically adjust itself upon certain criteria (when the word being entered is the same as one that already exists, move that Node to the front of the list). My code appears to run fine but after a certain amount of time, it just stops running. When I try debugging it, Eclipse just suspends the process at that point and I cannot figure out why as it provides absolutely no feedback at all. It appears to be on one of the while loops but I can't seem to figure out why. Any help would be greatly appreciated. The code is relatively long so I will paste it below this wall of text. I am not super experienced in programming yet so you might notice some mistakes/annoyances.
SelfAdjustingListOne.java
...ANSWER
Answered 2019-Nov-20 at 21:56I figured it out with a little help from samabcde.
This block of code right here needed to be changed from this:
QUESTION
I want to achieve a result of showing spinner when a button is clicked for saving data. The button should hide (in the process of saving the data to back end ) and should then be shown again when data is saved.
Below is HTML code
...ANSWER
Answered 2019-Nov-20 at 13:32
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