All Questions

2
answers

How do you know if the scroll position is on top of a section?

I do not know if it was clear, but I'll explain, I have several sections on my site, and when I scroll I wanted to do some Javascript effects, as I do to know when exactly the user will be viewing the div, as in Scroll Spy Boostrap? I tried the...
asked on 02.06.2017 / 14:23
1
answer

How can I make sure the word does not break in the middle? And leave a maximum of 40 characters per line?

valor = '''In the beginning God created the heavens and the earth. Now the earth was formless and empty, darkness was over the surface of the deep, and the Spirit of God was hovering over the waters. And God said, "Let there be light," and ther...
asked on 10.10.2018 / 15:49
1
answer

puts and p in Ruby

What is the difference between p and puts in Ruby? When should I choose to use one or the other?     
asked on 06.06.2017 / 20:22
4
answers

How to get the name of the property to which a lambda expression refers?

I have a lambda expression being translated into an expression tree, as follows: Expression<Func<object>> expr = () => x.NomeDaPropriedade; How do I get the name of the property, which in this case is NomeDaPropriedade...
asked on 31.01.2014 / 14:36
2
answers

What is generalization and specialization?

In OOP, what is generalization and specialization? Would there be some explanation in some technical way and a not so technical way? Simpler to understand, etc.     
asked on 12.07.2017 / 21:10
2
answers

Format date in java

I need to format a date that comes up for example: 20161109103000 to 2016-11-09 10:30:00 . I've tried using SimpleDateFormat , DateTimeFormatter and could not format the date.     
asked on 22.08.2017 / 15:31
1
answer

Compiling code in Ubuntu and running on windows

Hello, I was wondering how can I compile a C code in Ubuntu and that run in Windows. I tried to put the extension ".exe" at the end of the file, but when I sent the executable to my teacher he said which did not rotate.     
asked on 18.06.2017 / 20:10
1
answer

Google query categories

I have a website with wordpress karanalpe.com.br . When I perform a search for it on google the following information is returned: WhenImakeaqueryforanothersite(landforexample)itispresentedaccordingtosomecategories.Let'ssee: The catego...
asked on 25.07.2017 / 15:10
3
answers

How to correctly format a monetary value?

I have a value that comes from the form this way: R$ 1.500,95 I need it to look like this: R$ 1500,95 How to make it become like the 2nd way? I need it to look exactly the way it was quoted.     
asked on 08.06.2017 / 22:41
1
answer

PDO shows no errors

My connection code does not show errors, what is the problem, I searched in several places and did not find anything about it: class Connect { protected static $db; public function __construct() {} public static function Databas...
asked on 31.05.2017 / 16:54