All Questions

3
answers

CSS Operators with @

As I had asked about the @media operator, I was curious because I saw other operators that started with @ and I would like to understand what is meant by operators like that, and which ones exist.     
asked on 14.12.2017 / 18:28
4
answers

How to disable textarea resize?

How do I disable resize of a textarea ? <textarea></textarea> I would like you not to change the size of the box ...     
asked on 17.01.2017 / 13:41
7
answers

How to implement a linear regression algorithm?

I need to implement a linear regression algorithm. Preferably, it gives results that are the same as or close to the TREND (or TREND ) function of Excel. I have already found a lot of material that attempts to explain the whole concept of...
asked on 05.02.2014 / 17:26
4
answers

What does the term "atomic" mean?

I see in some answers / questions the term "atomic". In programming, what does it really mean? Ex: comparison (4) is possible only for atomic and list types # Self increase id Mongo?     
asked on 09.11.2017 / 13:08
3
answers

How to solve a Notice: Undefined index?

Starting in PHP and following a tutorial I used the above code and ended up getting this error:    Notice: Undefined index: submit in C: \ wamp \ www \ mezzo-com \ reservas.php on line 3 How to solve it?     
asked on 18.06.2014 / 04:07
4
answers

How does jQuery make the parameters to be dynamic?

I noticed that in jQuery, parameters can often be passed or omitted, and regardless of order, they work as expected. What I mean is this. See the following codes below: $('#x').fadeOut(function(){ alert('complete') }); $('#x').fadeOut(40...
asked on 18.10.2015 / 23:59
4
answers

What is MySQL's CREATE VIEW command for?

I would like to know what is the CREATE VIEW command for MySQL?     
asked on 12.03.2014 / 20:00
3
answers

Why (1 == true) is "true" and (2 == true) is "false"?

I was explaining to a friend of mine the difference between == and === in PHP and wanted to demonstrate this through the javascript console. I was going to show him that in PHP, the following sentences would return TRUE w...
asked on 28.07.2015 / 17:01
3
answers

Problem when using substr in text with PHP

When using substr in a variable with text, it is returning a special character " " could anyone help me? I'm using the following code: $excerpt = get_the_content(); $excerpt = strip_shortcodes($excerpt); $excerpt = strip_tags($excerp...
asked on 06.03.2014 / 14:24
3
answers

Is it wrong to use multiple cases for the same action on the switch?

Is it wrong to do this with switch ? I programmed it like that, is it wrong? switch(estado){ case "AL": case "BA": case "CE": case "MA": case "PB": case "PE": case "PI": case "RN": case "SE": //FAZ ALGO AQUI PARA TODOS OS CASES DO NORDES...
asked on 25.09.2017 / 21:22