All Questions

2
answers

What is the technical difference between SSL and EV SSL certificates?

I'm in the phase of implementing the Cielo API on my site. On the integration site there are two types of certificates in this link , EV SSL, and SSL . Honestly I'm messing with Certified for the first time, I know the SSL but I did not und...
asked on 20.10.2017 / 15:49
2
answers

After all, what is the function of repr in python?

I'm a beginner in python and wanted to know what this really confusing function really is, I looked at several sites but none really tells what it's for.     
asked on 01.05.2017 / 19:51
2
answers

What defines a Neural Network as Perceptron?

I think it's important to talk about artificial intelligence, I've researched here in the stack overflow and I did not find anything relevant about it. Can anyone with experience explain the definition of a Perceptron Neural Network? We know t...
asked on 17.07.2017 / 16:12
1
answer

Can you notify us that there will be a garbage collection?

I am studying about the garbage collector of .NET and wanted to know if there is an event I can sign up to and always know when a collection will be made.     
asked on 08.05.2017 / 16:46
1
answer

How does PostgreSQL inheritance work?

How does inheritance work in PostgreSQL? Is it a good practice within relational database frameworks? How do you use it?     
asked on 27.03.2017 / 13:58
1
answer

Why hide the implementation of a class?

This is the concept that I have tried hard to understand, but I have never fully achieved it. I'll take this excerpt from a Deitel book to illustrate:    It is better software engineering to define member functions outside the   class defi...
asked on 10.09.2017 / 16:30
1
answer

What is the difference between halt, poweroff and reboot?

I've heard several times that if I want to shut down / restart the computer through the terminal, just do one of the following: halt poweroff reboot poweroff and reboot are very intuitive "off" and "restart", I just did...
asked on 19.07.2017 / 15:30
1
answer

Remove comment lines from TXT files

I would like to know how to remove comment tags from TXT files with PHP , could anyone help me? I'm having this problem reading txt files that are displaying the comments. PHP code: function extrairDadosNotificacao($NomeArquivo){...
asked on 03.01.2018 / 16:49
1
answer

Access properties without knowing name

Is it possible within the class to access all your (properties) definitions without having their names? For example, if I create an instance of a class $classe = new Classe() , and I'm defining things in it: $classe->ComprarFile...
asked on 13.10.2015 / 03:18
1
answer

More elegant ways to reverse integers, arrays, and strings in Python

Save! I've been looking for elegant ways to reverse strings, arrays, and integers in Python. What do you think of my codes below and what do they suggest to improve them? They work ... Thank you! frase = 'eu gosto de python'[::-1] num...
asked on 28.10.2015 / 00:33