All Questions

1
answer

Increasing and decreasing ordering in ClientDataSet

I have to sort clientdataset for 3 fields at the same time: 1 - Active (0 or 1) 2 - date (dd / mm / yyyy) 3 - name The problem is that I need to do different sorts for each of them, the 1st descending and the other ascending. I...
asked on 17.02.2014 / 14:30
2
answers

How to make an effect by adding a new item to a list

I have a list that updates from time to time and I would like to add a similar effect to this site: Site This is the list that is in the middle of the site. Where, when a new item enters the list, the rest of the items go down making an...
asked on 23.03.2014 / 01:20
1
answer

What is the best practice for a "back page" link?

Would you like to know the best practice for that default button / link in the applications? Today I use href="javascript:history.back();" but there are some considerations that over time I came across, are 3 doubts : INCOMPATIBILIT...
asked on 25.10.2015 / 14:35
3
answers

What are the advantages of using Docker instead of Vagrant?

I already use Vagrant and have heard good things about Docker. I'm a web application developer. What are the advantages of using Docker instead of Vagrant in a software development environment?     
asked on 04.07.2015 / 21:41
2
answers

How to disable mouse scroll button?

I would like to know how to disable the scroll central button ? I do not want to take the scroll just the scroll button of the mouse that has a right-hand side up and down when I click it, I want disable it.     
asked on 17.04.2015 / 21:15
1
answer

Do you really need the "Then" at the end of the If block?

The Visual Basic .NET compiler seems to ignore the reserved word Then , which is at the end of the If block. If (1 + 1 = 2) Then Console.WriteLine("Passou no teste.") End If And now, without Then : If (1 + 1 =...
asked on 22.10.2015 / 00:29
2
answers

How to filter data from a JSON with JS?

Well, I'd like to know how to do a "select" within a JSON file using JS. Example: IhaveatablebelowusingdatacomingfromaJSONfile,butIwantedtomakeafilterforwhenIclicksearch,itdropthetableintotheresult.Note:IdonothandlealotofJSframeworks,buti...
asked on 14.09.2015 / 19:27
1
answer

Why can unboxing only be done for the type that was previously boxed?

I've been researching why there are unboxing and boxing , the answers I found say that there are value types in> reference types , for example in non-generic lists ArrayList . So is it correct to say that unboxing / Int32 doe...
asked on 17.07.2017 / 00:36
2
answers

how to do a dynamic Stored Procedure picking up data from other database tables?

I'm in a social networking project with @RodrigoBorth , and we have the problem of How to index and update a user comparison system ... We were given the idea of working with Stored Procedure in MySQL and then I went back! I read about concep...
asked on 07.03.2014 / 13:57
1
answer

What is the difference between String name="test" and String s4 = new String ("Peter");

What's different about assigning a value to the variable by creating an object and assigning unboxing to a direct value? String s4 = new String("nome"); String nome = "nome"; System.out.println("nome == s4 " + (nome == s4)); //retorna fals...
asked on 05.09.2017 / 04:07