All Questions

2
answers

Add previous row in mysql

I have a launch line, in which this line would need to receive the value of the previous line +1, some example of how to do this? Table structure: CREATE TABLE 'lancamento' ( 'data' VARCHAR(10) NOT NULL, 'descricao' VARCHAR(30) NOT NULL,...
asked on 04.10.2017 / 14:44
1
answer

Remove eye glow from image

Well, I'm trying to apply canny edge to the image because the brightness that is contained in the pupil impairs the result obtained because to have an edge with cv2.Canny() or feature.canny() needs that there is a continuity of it....
asked on 28.11.2018 / 19:49
1
answer

How to disable XHR messages from loading in production

I have a system developed in Angular language in version 4. The system that generates application build in production is the webpack. The following starter is used as the base: angular 4 webpack starter The system is finished, but has the foll...
asked on 04.10.2017 / 15:35
1
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How can I convert RGB values into pixels for an image in PHP?

for ($j = 0; $j < $altura; $j++) { for ($i = 0; $i < $largura; $i++) { $rgb = imagecolorat($img, $i, $j); $rgb = imagecolorsforindex($img, $rgb); $imagem[$c] = $rgb['red'] + $rgb['green'] + $rgb['blue']; $e = 9; $codig...
asked on 11.09.2017 / 22:08
1
answer

How to detect the mouse wheel?

I need to detect if the user is scrolling the mouse scroll down. I tried with GetKeyState , but it seems that there is no way to scroll the mouse scroll. I also found this , but not I could understand how to use it in C #. Code:...
asked on 29.07.2017 / 21:47
1
answer

How to create a dynamic array using list chained in C language?

Please help me with what power on the subject, I am having difficulties with data structure in college. Thanks in advance. What I already have for coding! typedef struct tipoElemento { int valor; struct tipoElemento *abaixo; struct t...
asked on 13.09.2017 / 03:40
1
answer

How to filter by cities States in Laravel?

I made a filter in laravel and it works perfectly but nevertheless it brings all the cities. It does not bring the specific cities of that state. I do not know if this filter has to go there in the laravel controller, how does it work for jquery...
asked on 04.10.2017 / 15:45
1
answer

Let's Encrypts Is it possible to certify IPs?

I have a local server running some php applications, and some running in virtual environment hosts, all accessing via https , but now the company wants to make the intranet available via ip for external access, but they do not want...
asked on 18.09.2017 / 22:55
2
answers

What is the purpose and how to use Broadcasting in Laravel?

Version 5.3 of Laravel has some news, such as Broadcasting , for example. I read the documentation, but I could not quite understand it. I have seen that it has some relation (if direct or indirect, I do not know) with the Websockets. I a...
asked on 05.09.2017 / 13:47
1
answer

Problem deleting data from a worksheet

I have the following code snippet that connects to excel, where it will exclude data from a tab in a spreadsheet. private void AtualizarPerformanceEntrega() { try { string sFileXLSX = Server.MapPath("ExportPer...
asked on 04.10.2017 / 15:11