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Mastering Development

ASP.NET Core MVC AzureAD run code after successful sign-in

I’m using I have authentication with AzureAD set up using OpenID Connect with an ASP.NET Core 2.2 MVC app. I want to be able to log info about the user right after a successful sign-in into the application. In the code below, I use options.Events.OnTicketReceived event to add role claims from an external database to […]

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Linux Mastering Development

Open all the terminal current contents in an editor without using the mouse

After issuing some commands in my terminal emulator, I want to open an editor (for example, Gvim) with the whole terminal session, that is, all the lines which are still in memory and thus could be viewed by scrolling up. Can it be done? I prefer to do it with a keystroke, without touching the […]

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Ask Chemistry

rate of reaction and RDS

An article on Khan-Academy, states the following: The overall reaction rate is determined by the rates of the steps up to (and including) the rate-determining step Here, it says that rate is determined by steps before and including that of RDS. But from what I know the rate is determined by one single elementary reaction, […]

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Database Development

Warning message: invalid value for parameter “default_tablespace” in postgres

I create a new tablespace using the following script: CREATE SCHEMA semiarido; CREATE ROLE semiarido PASSWORD ‘senha’; GRANT CREATE ON SCHEMA semiarido TO semiarido; GRANT USAGE ON SCHEMA semiarido TO semiarido; alter role semiarido set default_tablespace = semiarido; GRANT ALL PRIVILEGES ON ALL TABLES IN SCHEMA semiarido TO semiarido; ALTER ROLE "semiarido" WITH LOGIN; When […]

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User Help

Best datastructure in javascript for certain relationship [closed]

I need to assign an array containing integers between 0 and 3 to another array. This output array contains itself arrays with two integers. For example, I have the array [3, 1, 2, 2, 0, 0, 2] and when I look it up in the datasructure I want to retrieve [[4, 50], [5, 50]]. The […]

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Mastering Development Software

Maintain order of processing data same order in which data received using multi-treading design

In one of the interview below question asked to me Suppose there is a stream of emails that we are fetching from a mail server. We need to do some processing on these emails and print the output in the same order in which we received the emails. If we fetch emails in the order […]

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Ask Chemistry

Extrema in free energy of a solution?

I am a high school student reading about the second law of thermodynamics, and one of the equations given was the free energy change in dilution. G(dil) = -RT log(C1/C2) This implies that as you make a solution more dilute, the free energy decreases. However this equation does not take into account the entropy change […]

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Apple User Help

Should important files in iCloud also be backed up elsewhere?

It is commonly accepted that any files stored on a personal external hard drive should also be backed up elsewhere (in at least one other drive/location) since external drives can and do fail and having >=2 copies greatly reduces the chances of important data being lost. Is the same measure necessary for important files stored […]

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Mastering Development

Mocking npm package with different returns

I’m trying to mock an npm package implementation, both to return a Promise that resolves to true and for another test, I want to reject with an error. At the top of the test file, before the first test description, I define the following code to mock an npm package: const mockNewFile = (): File […]

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Mastering Development System & Network

Spring Boot and stop by systemctl not working

My application uses Spring Boot 2.3.1.RELEASE, it is an executable jar that uses an Embedded Tomcat and is listening on port 10605. I deployed on CentOS Linux release 7.6.1810 (Core). I took the following steps: SPEEDYF.service creation [Unit] Description=SPEEDYF After=syslog.target [Service] User=root ExecStart=/usr/local/bin/SPEEDYF/SPEEDYF.sh SuccessExitStatus=143 [Install] WantedBy=multi-user.target creation of executable SPEEDYF.sh #! / Bin / bash […]