Martian | : art : Martian框架是 Magician项目的一个超集， | Aspect Oriented library

If a String has length N, its characters are numbered 0, 1, ... N-1.

There is no charAt(N). That index is off the end of the String.

Therefore, any loop has to run from 0 to N-1, not 0 to N.

That is, for (c = 0; c < N; c++) and not for (c = 0; c <= N; c++)

This is one obvious case:

Your "readBooks" function opens the input file and parses each line with the assumption that it contains book data. It needs to instead grab each line, then (based on your file format) examine the substring from the beginning of the line till the first comma and compare it to values (MOVIE, BOOK, JOURNAL). Once you know what kind of line it is, then pass the line into a function that is specific to creating the type of object needed by that line.

I have fixed the issues.

Sandbox: https://codesandbox.io/s/affectionate-sinoussi-5suro

You are already looping over data inside renderList, so we can directly have

To sort, we can use Array.sort()

data.sort((a, b) => a.groupType === b.groupType ? 0 : a.groupType > b.groupType ? 1 : -1);

Also, in switch case you need to push the component and not a function.

If gawk is available, would you please try the following:

How about

When creating the person p you need to pass the species parameter. As well, you are not using that argument in your function.

Calling could look like this:

In the default VPC there are some pre-polutated firewall rules that allow internal communication between subnets, since it seems like you are using a custom VPC you need to manually create your firewall rules as needed, but since you created a permissive firewall rule (allow Ingress/Egress for all instances from ranges 0.0.0.0/0) it should be enough.

To discard/confirm any issue within your VPC you can take advantage of "Connectivity Tests" to simulate traffic between your instances and the output will give you an insight about the issue, the test result is either PASS or FAIL, in both cases you will see this flow considering many networking components (firewall rules, routes, peerings, hybrid connectivity, etc), if there is something missing in your GCP configuration you will notice it, on the other hand, if the test result is PASS then most likely the issue resides within your VM configurations, a good option would be to run a packet capture and see if packets are actually arriving your VMs and being discarded, for example, install tcpdump and run the following command in vmB (modify it as needed):

I didn't get your point in asking user for multiple actions (Select option & Click on the button) where he could get respective options just by selecting any of the option in your code. Anyway you can try below code where you get next question by clicking on the next button. (This could be the example of hardcoding :P)

One option could be to create a custom button that inherits from Button and override its OnPaint event (building on TaW's comment).