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2
answers

Hierarchize layouts

I want to organize the screen of an activity in this way: So far I have this but I overlap all the layouts starting from above one on top of another: <?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http:...
asked on 21.04.2017 / 13:24
3
answers

LEFT OUTER JOIN query with 4 tables

I have 4 tables and Wallpapers, Downloads, Favorites, Votes that are defined as well. Of wallpapers I just need the id. Table Downloads +----+---------+---------+ | id | wall_id | user_id | +----+---------+---------+ | 1 | 1 |...
asked on 23.03.2017 / 01:45
2
answers

Extract VARCHAR inside another VARCHAR in SQL Server

My question is very simple but requires a bit of programming, easy for some, complex for me at this time. I have a table that gives me these examples as an example: +--------------------------------------------------+ | Da...
asked on 26.04.2017 / 17:27
1
answer

What is the best collation for my MySQL Database?

Greetings! I am working in a database which has planned to answer many queries, the case is that I want to know what would be the advantages of using utf8_spanish2_ci, utf16_spanish2_ci and utf32_spanish2_ci? They wanted me to explain thei...
asked on 10.04.2017 / 22:55
3
answers

Flex boxes at 50% of the screen

Using divs with display:flex I would like the two elements that are going to have to occupy 50% of the screen respectively, but I do not get it by modifying the property flex-grow . I have tried to play a bit with the values of that...
asked on 20.02.2017 / 10:21
4
answers

Check mail with PHP

Good morning, Through a registration form, I receive mail among other things. To check that it is an email I do a series of simple checks, however when trying to find the position of certain characters like @ it does not return anythin...
asked on 20.03.2017 / 01:22
2
answers

Print Multiple Data in C ++

Good morning, I have the following exercise in which I wish that at the end of the program I would throw a list with the names and ID of those who are foreigners. How can I do it? #include <iostream> #include <iomanip> #include <...
asked on 10.04.2017 / 15:31
2
answers

ORDER BY, how to order salary amount

good day guys my doubt is this I put the syntax with its respective order by desc to show me the gain from highest to lowest but I keep ordering them randomly: ( SELECT month(s.fInicio)AS [MES],a.Nombre_auto, SUM(DATEDIFF(d, dateadd(d, -1, s...
asked on 31.10.2018 / 16:55
1
answer

Error starting IndexOutOfBoundsException application

The application starts correctly, the error jumps when I try to access the path where the application is, which in this case is localhost: 8080 The default driver is this package com.example.demo.controllers; import java.util.HashMap; impo...
asked on 20.11.2018 / 09:47
1
answer

Is it possible to do several toString () of the same class in c #?

I have a defined class which I want to take two methods toString (), especially for the aesthetics of the program, I want in one case to display several variables (for a listbox) and for another only one variable (for a combobox) , in the follow...
asked on 03.10.2018 / 06:57