All Questions

1
answer

How to format the result of a date?

I have developed a code where I put in an EditText the time after selecting it, with this following code the problem I have is when I select a time like 05:08 I get in the EditText 5: 8 (because it is in AM) but If I was in PM, the same time I g...
asked on 21.12.2018 / 18:58
1
answer

Query pulls an error by ambiguous column

Good morning I'm making a query in postgress and it throws an error:    "ERROR: the reference to the column" num_request "is ambiguous LINE   4: WHERE num_request in (3,6,9); ", select * from area inner join empleado on area.num_solicitud...
asked on 04.01.2019 / 14:38
1
answer

modal window does not scroll

I am using bootstrap to make modal windows but when loaded a lot of content can not be downloaded with the scroll to see the other information because the scroll is hidden automatically when I open my modal, that is, it remains static, I use the...
asked on 29.02.2016 / 18:40
1
answer

Alternative to SQLFiddle

The page link currently does not allow creating tables, who knows any alternative to this page? The issue has already been reported to the developer team of sqlfiddle, but it still has not been solved, for that reason I am now asking for an...
asked on 04.01.2016 / 17:44
4
answers

Should I always use a servlet to work with web applications?

I want to create a web application using Java. I have some knowledge of the language, and when searching online tutorials they always mention the creation of a servlet . Is it necessary to learn and use servlets to create these types of ap...
asked on 05.12.2015 / 19:21
3
answers

Use of def __unicode __ (self):

Use Django 1.9. I have two models related to each other, one contains an id and name among other attributes and the other contains its own id along with the id of the first model: class Televisor(models.Model): idTelevisor = models.AutoFie...
asked on 10.02.2016 / 02:44
3
answers

Share content with social networks through direct link

I need to know what is the correct format to share the web page by direct link. I found the following format to share links on Facebook: https://www.facebook.com/sharer/sharer.php?u=[ENLACE] &picture=[URL DE LA IMAGEN] &title=[TITUL...
asked on 03.02.2016 / 17:47
2
answers

SQLite how to order from highest to lowest?

I would like to know how I can do a ORDER BY or order the query ascendingly, this is the code I tried but it sends me an error that the application has stopped. public Cursor readData() { String[] allColumns = new String[] { Databas...
asked on 02.02.2016 / 14:59
2
answers

How to know if several periods of time overlap?

I need to iterate an array of date objects, with duration and get how many overlaps each of them. But I'm looking to do it efficiently and quickly. I'm looking for frameworks to manage time periods but I have not found anything. I develope...
asked on 23.02.2016 / 15:12
1
answer

javascript calculator

I have to do a graphical calculator in Javascript, and the problem I have is that I need to press the button to print the result between the previous numbers in the text. It has occurred to me to do it with a Boolean counter so that only the f...
asked on 22.10.2018 / 21:42