All Questions

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Update one for many Entity Framework

Hello, I need help with an update using entity framework and one-to-many relationship. I think it's pretty basic, but I'm starting with EF and I can not solve the problem. Artist and Telephone Artist entities, where an artist can have several...
asked on 11.01.2016 / 20:58
1
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How to set charset UTF8?

I have a database that was created using Firebird 1.0, at that time there was no available UTF8 charset, only from version 2.0 it was possible, so we left charset none. Questions: 1 ° How can I define UTF8 charset? remembering that the cha...
asked on 29.01.2016 / 16:05
1
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Meaning of the operator? [duplicate]

What is the function of by a !! in an if for example? I know that ! by itself reverses the value of a boolean result, but I tested !! and nothing changed in the result, eg: $teste = true; if(!!$teste) { echo "é verdad...
asked on 19.01.2016 / 12:19
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How do I make smaller tables from a data.frame in R?

I have a table in the data frame, with 100 animals, but with 500 observations of various characteristics. as I do to have subtables, with only the animals and the characteristic x, being q he should show tds the 500 observations of this characte...
asked on 21.01.2016 / 14:45
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Creating doc or docx file [closed]

I wanted to know if there is any lib capable of creating a doc or docx file straight from an android app. I've tried apache poi, but it does not work. I'm using android studio. I have tried in many ways but I can not, if anyone can help me thank...
asked on 02.02.2016 / 07:01
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Numberlist with VisuAlg

Problem with this algorithm in visualg The code is looping infinite "Numberlist" // Função : // Autor : // Data : 09/02/2016 // Seção de Declarações var a1,b1,c1:inteiro inicio // Seção de Comandos para a1 de 0 ate 9 faca...
asked on 10.02.2016 / 03:06
2
answers

Change System Logo

I'm creating in a system that I'm developing for our client, a function where it allows the same to upload the logo and cut it, then when it's saved I'm trying to load the image that was uploaded, but it happens I need it to always be the same n...
asked on 04.02.2016 / 12:31
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How to make a payment system via ticket?

I am developing an online store and I have several doubts, but the main one is:    How to make a payment system via ticket? It's nothing more than a system that generates a valid ticket, such as the eBay system. Does anyone know how to...
asked on 20.01.2016 / 19:28
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Erase everything but the smallest per day

I have a space problem and there are a lot of useless things being stored, but they are useful during the same day (you will understand). Actual problem: There are more than 2 million "lines" and this is taking up more than 1.1GB, I am u...
asked on 26.01.2016 / 15:48
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Detect copied text

How to perform an action whenever someone copies some text in the keyboard of Android? And would you have to use a service to let it run all the time?     
asked on 17.01.2016 / 22:33