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Off topic only welcome – but cool if you can also do math and science stuff – if only talk about it, no calculations.

Modified: 03/31/2020

categories – How can you access category information from a topic?

I create a wordpress site to host my illustrations and comics, each series of comics is in its own category, so I would like to display the category information in the site via my theme / plugin that I create.

There are three things I would like to do:

  • Display the category title, description and a URL to its archive using its category ID.
  • Get the identifiers of the oldest and most recent article in this category so that I can add links to "Start Reading" and "Read Last"
  • Sort an array of Category IDs by date of the last post, so the last updated series can automatically float to the top of the list.

Is it possible to do this?

The topic has been canceled.

The topic has been canceled.

I'm working on a new topic – looking for feedback

I am working on a theme for my new forum and I would love to hear your comments on it.

The forum can be found here: A green life today

And here's what the header looks like for connected members:


Official support 2020 and off topic discussion

2020 site battle madness
Tournament support

North Division:

North Division.png

South Division:

South Division.png

East Division:

East Division.png

West Division:

West Division.png


Feel free to use this topic to discuss everything that's going on with our Site Battle Madness contest …

Official support 2020 and off topic discussion

How to display menu components after correctly connecting the component using the behavior topic in angular 7?

I'm new to Angular 2+ or you can say Angular 7. I want to display the menu component after a successful login using the behavior topic. Can you give me an example for that

Suggested topic

I am thinking of entering scientific initiation. I graduated in CC, but I'm out of ideas. Any suggestion of problems requiring a solution or suggestion of subject to be developed.

Amazon Web Services – AWS Multiple SNS and Single Lambda Topic

I am creating several lambda messages on several SNS subjects and these messages will be received by another single lambda. Please clarify, is there a performance issue on this model.

The implementation can as below.

Lambda 1 -> SNS Subject 1

Lambda 2 -> SNS Subject 2


Lambda 3 -> SNS Subject N

SNS subject triggers (1 to N) -> Lambda DM

Lambda DM – separate messages according to subscription and send them to API Gateway.

Please give me advice, what are all the problems I might face.

Conditions inside objects | Easy topic |

   public class ContadorLimiteRegreso {
    private int valorActual;
    private int limite;
    private int incr;
    public ContadorLimiteRegreso(int lim) {
        valorActual = 0;
        limite = lim;
        incr = 1;
    public int obtActual() {
        if (valorActual == 0 && incr == -1) {
            incr = 1;
        if (valorActual == limite && incr == 1) {
            incr = -1;
    int ret = valorActual;
    valorActual += incr;
    return ret;

I was asked to create a class that creates an instance of the class (code attached at the top) with a limit of 2 and without using cycles. I must also invoke and print the result of this invocation 7 times so that the output is:


Thanks in advance.

user-centered design – is it possible to separate a topic from the context?

It is a bit theoretical, but I wonder if it is really possible to separate the context from the subject when studying the context of a particular subject.

For example, would there be a significant difference if I worked with UX and studied the background of a water purification plant worker without knowing anything about the chemistry or purification concepts of water beyond the basics? My position is that these "details" and the subject (chemistry) are necessary and are part of this context which is used to inform the user experience and create appropriate interactions and / or interfaces.