ool | utility like say on macOS but Ool is cross platfom

Since we migrated to modules we started experiencing a time out when installing the application for the second time. It only happens if we run the app for the second time. If we clear the project (Build->Clean Project) it launches ok, but the next time we try to run, it times out. I have looked at the Android Studio logs and found an error that is thrown when launching the app but I am not sure what could go wrong and how to interpret these logs. Here is the snapshot of the logs:

I am using java websoket client to create a websocket connnect in java 8, this is my code:

I have a string like this one:

dsl-34.345.324-24718.pool.vodafone9.com (not a real hostname, just an example)

I've already tinkered around with preg_split which didn't gave me the good result.

Anyway, I'd like to get this result:

pool.vodafone9.com

EDIT

Sorry, for not showing directly what I did with preg_split(), I already thought about doing that, however, it would have resulted into a completely wrong result when there are numbers within the domain.

I need to find the name and date of birth of all passengers that have not booked flights with Qantas.

Here is what I have tried so far:

I need to make it possible to only store the values of 'FIRST', 'BUSINESS' OR 'ECONOMY' in a table. However when I try to do this, the error is shown as:

Error 3819. Check constraint 'seat_check1' is violated. I have looked through the insert statements and the values that were input were not violating the check constraint.

Here is what I have so far:

I have two table which has data as below

Table1

I recently started learning Scala and am currently messing around with tutorials. I'd like to have 2 implementations of Rational Arithmetics. I have trait IRational and 2 classes implementing it: Rational and RationalAbstraction. Most of the functionality is the same so I implement default behavior in trait but I need to get the correct constructor - either for Rational or RationalAbstraction. To this end I have a function:

I have recently updated my Android Studio to 3.6.1, thereby also updating gradle plugin to 3.6.1 and the gradle wrapper to 5.6.4

When running the debug build, I keep getting this error

My question is about the difference of the elapsed time according to the point.

For finding the largest portion of the total elapsed time when executing in my code, I used clock function.

source : calculating time elapsed in C++

First, I put the clock function at the start and end of the main function. (Actually, there are some declaration of variables but I deleted them for readability of my questions). Then I think I will be able to measure the total elapsed time.