zan | 高效稳定、安全易用、线上实时验证的全异步高性能网络库，通过PHP扩展方式使用。 | Reactive Programming library

I have a small problem which I can't find the solution for and it's making me frustrated. I am including a link to my CodePen where you can check the code. The problem is that the h2 tag moves up a little once it is clicked and the hidden content displayed. I want it to stay in place and the hidden content to take space below and not move the h2 tag up a few pixels.

How to use the filter in java 8 stream to filter out complex List of objects. Suppose I have a class like this

Given this sample data:

Here is the web code

I am trying to implement a simple producer/consumer code using pthreads. The only common shared data between producer and consumer thread is the count variable used for counting the number of available elements in the shared array. What is happening is the count updated in one thread is not getting reflected in other. How can I make sure the writes to count in one thread appear in other as well? Am I missing something?

I am trying to create a shipping state filter dropdown on WooCommerce admin orders list

First I have added a custom column for shipping state to admin orders list:

I'm trying to fix an issue with my GGBalloonPlot graph with regards to how R processes the axis labels.

By default R plots the data using the labels ranked in reverse alphabetical order but to reveal the pattern of the data, the data need to be plotted in a specific order. The only way I've been able to do trick the software is by manually adding a prefix to each label in my .csv table so that R would rank them properly in my output. This is time consuming since I need to manually order the data first before adding the prefix and then plotting.

I would like to input a character vector (or something like that) which would essentially specify the order in which I want to have the data plotted which would reveal the pattern without the need for a prefix in the label name.

I have made some attempts with "scale_y_discrete" without success. I would also like to do the same thing for the X axis since I've had to use the same "trick" to display the columns in the proper non-alphabetical order which offsets the position of the labels. Any idea on how to get GGplot to display my values as seen in the graph without having to "trick" the software since this is quite time consuming ?

I have an array with n items that I looped to create n input buttons. Each input button has onclick function typeItem() that adds the clicked Item to a new array typedItem[] and makes that clicked item hidden and give it a new class clicked.

Then I have an upper Button with onclick function undo() which supposed to remove the hidden property and make those clicked items visible again. I used the document.getElementsByClassName method to get the elements but it does not get all clicked elements except for the first time.

When I click more than 5 items randomly and trigger the undo() function, not all elements clicked reappear again. it misses one or more buttons especially from the second time after reloading the page...

Why that happens and how to fix it?? ...

I'm trying to write my own software for security camera motion detection, but in the area of interest outside my house, there is a lot of vegetation motion that will obviously trigger recording if I use some of the more simple algorithms that rely just on the difference between images. Does anyone have any recommendations? I'm struggling to find motion detection information online. I'm guessing that I'll have to employ some edge detection, or maybe a filtering process. Cheers, Zan