All Questions

2
answers

What are functional interfaces?

What are functional interfaces in Java? Has this concept already existed or came out of version 8 of Java?     
asked on 31.03.2014 / 21:02
2
answers

What is the C ++ copy constructor for? How should I implement it?

I am programmer Java and I am currently studying C++ . In addition to the "normal" constructors (the default constructor and the parameterized constructor), C++ has a copy constructor. I would like to know what it is for and...
asked on 27.03.2014 / 18:01
2
answers

Pick up current machine date

I need when I run the code it takes the current date of the system and assigns a Date . Example: Date x = new Date(now);     
asked on 21.10.2015 / 07:39
7
answers

Check user's browser in PHP

How do I check if the user is using the Internet Explorer browser, version 10 down, so that I can display a message to update it before entering my site?     
asked on 15.08.2014 / 17:48
3
answers

How to switch text between "show / hide" inside a button with javascript

I do not know anything about Javascript . So even being something "simple" to some to me is a seven-headed animal. It is as follows: In the following code there is a script that I will use that hides and shows the div by clicking on the b...
asked on 05.01.2015 / 07:19
2
answers

Discover the position of the Scroll of a certain object

Is it possible to know the position of the scroll of a given object through Jquery or pure Javascript? I tried var posobj = $("#meuobjeto_id").scrollTop(); However, the value obtained is always 0. Any idea? I want the user to go through...
asked on 19.11.2014 / 19:48
2
answers

Reduce the size of an APK file

Is it possible to reduce the size of an APK file by changing the way it is compressed? It is well known that an APK file is just a signed, aligned ZIP file. However, I have run some tests, and if the contents of an APK file is extracted, and...
asked on 12.09.2014 / 19:59
2
answers

How to destroy a specific session?

It's as follows: I have an application / game that uses sessions to memorize the data that the users have chosen. Whenever the user restarts the game I need to clear the information, so I was perfectly using the session_destroy(); Un...
asked on 03.09.2014 / 20:28
2
answers

How to implement A / B tests?

How can I implement A / B testing on a new system? I am developing a tool and would like to compare the results of each modification, but I have no practical knowledge of how to implement this type of test.     
asked on 28.04.2014 / 20:36
2
answers

Best way to use and Instantiate the EntityManagerFactory

My project has the following structure: Withinthebr.mandacaru.DAOpackagearethecontrollers.ToinstantiateaJPAControllerobjectIneedaEntityManagerFactoryobjectandforthisreasonIcreatedaEntityManagerProviderclassthathasagetEntityManagerFactorymetho...
asked on 03.01.2015 / 18:10