All Questions

1
answer

Difficulties with selecting items in a QTreeView

Scenario: I have an application that manages a list of images of human faces with prototypical emotional expressions. I've created a class inherited from QAbstractListModel to provide the data access model (model), and I'm using two...
asked on 04.03.2015 / 04:35
1
answer

Error sending Upload with Ajax

I'm trying to upload a file via Upload to a certain folder but I'm not able to make or understand the error being accused by the script, I'll try to be as clear as possible in describing the problem. Here is the excerpt from Upload Upload: //...
asked on 28.07.2015 / 15:16
1
answer

C # Windows Forms Application Slowly on certain machines

Good afternoon, I performed the migration of an application running on a windows ce for desktop, the Application uses Sql Server Compact 4.0. and runs very well in the development environment, I have tested in other development machines and all...
asked on 15.12.2016 / 17:51
4
answers

How to force the opening of a link in another tab and not window?

I have a button (anchor) that needs to be 'hidden', or no text at all. His structure is this: <a class="testeimprimir" href="javascript:teste1();" target="_blank">TESTE</a> The function is this: function teste1() { window....
asked on 07.11.2014 / 12:47
5
answers

Physical Exclusion vs. Logical Exclusion

Is it a common practice? Is it safe?    Derived from: Physical Vs. logical / soft delete of database record?     
asked on 24.03.2014 / 13:46
3
answers

How to get content within string up to a "bar /" character

I have the following String: $link = '13542345/essa_e_minhastring'; How do I get only the value up to the "/" bar and ignore the rest? I'd like to assign this value to a variable. I'm using the following code, but it just breaks the s...
asked on 28.09.2015 / 23:17
3
answers

Why is it possible to change an array or object value from within a constant?

const array = ["a", "b", "c", "d"]; array[1] = 2; console.log(array); //- ['a',2,'c','d'] In this example I gave, I changed the value of the constant dynamically, too, it is possible to do the same with objects. I would like to...
asked on 29.09.2018 / 01:17
6
answers

How to save the day in the bank?

How do I automatically save the day in the database without having to spend it when adding the product, ie every time you add a product, it automatically writes the date of the computer to a table attribute.     
asked on 08.10.2015 / 18:30
2
answers

Voice connection between two points

I would like to study about, read how it is done and all possible details about making voice calls between two points A and B It also works these links between users like viber, WhatsApp, facebook provide. Is it possible to use PHP HTML5 J...
asked on 17.02.2015 / 03:49
3
answers

What is the difference between throw and alert

In the functions below I verify that the throw works the same as the alert. Can I replace it with an alert? Is there any inconvenience? var letters = new Array("A","B","C","D","E") function getLetter(fld) { try { var inp...
asked on 25.09.2018 / 02:52