All Questions

2
answers

Self-referential global object: what is it and why does it exist?

The window object in browsers has a window property that is self-referencing : window.window === window; // true And there are still other equivalent properties in browsers: self === window; // true top === window; // true...
asked on 27.01.2014 / 02:46
3
answers

What is the difference between using virtual property or not in EF?

I have my models public class Cliente { public int Id {get;set;} public string Nome {get;set;} } and public class Pedido { public int Id {get;set;} public int ClienteId {get;set;} public virtual Cliente Cliente {get;set;} }...
asked on 04.03.2015 / 03:26
2
answers

Is it possible to add scroll-only overflow behavior in a table's tbody?

You can add overflow behavior with scroll only in tbody and still do not have to set fixed sizes in pixels without having to separate the header of the columns with the body, as seen in the plugins that provide grids ? css fo...
asked on 12.09.2014 / 16:06
2
answers

IP ToS Field Tagging in Openflow

I'm a beginner at this, so I have a question. Considering a video application called DASH IF (dash.js) that runs (emulated) on a mesh network with SDN (Software Defined Network). I want the ToS (Type of Service) field to be marked...
asked on 27.11.2015 / 00:01
4
answers

Constraint on table change with subquery

MySQL's documentation says:    You can not change a table by selecting data from it in a subquery This applies to DELETE , UPDATE and INSERT operations. The solution is usually to replace the subquery with something...
asked on 09.09.2017 / 04:56
6
answers

Difference between php and php tags?

Well I'm learning Laravel and I was left with a doubt following some tutorials. At certain times within view the tag is used: <?php foreach($produtos as $p): ?> and when will I get the data <?= $p->nome ?&g...
asked on 30.09.2015 / 15:27
7
answers

How to differentiate phone types

I have the following problem: the client will send me a phone number and I need to differentiate if it is fixed or cell phone, does anyone know some rules that distinguish the two groups well?     
asked on 29.04.2014 / 22:01
6
answers

What is the difference between elseif and elseif?

I wanted to know the difference between else and elseif in PHP, and when to use one or the other.     
asked on 10.04.2015 / 14:44
1
answer

What is a Triple-A or AAA level site? What do I need for my site to be considered an AAA in accessibility?

I find accessibility very important, but I believe that I have neglected this good practice a lot and have been reading Web Content Accessibility (WCAG) 2.0 . So I noticed that there is a degree of accessibility that the site can receive A...
asked on 30.10.2018 / 13:24
8
answers

How to check if a checkbox is checked with PHP?

How to check if a checkbox is checked, in a form submit?     
asked on 13.02.2014 / 17:37