All Questions

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Query indexes in MySQL

Using indexes in mysql queries actually makes the result come quickly for some large queries or tables. For example in the query below: SELECT * FROM table WHERE status = 1; For a table with 1 million records if I give the command below:...
asked on 10.09.2014 / 15:33
1
answer

How to implement memoization in a PHP function?

I saw today at answer the following code: function fibonacci($n) { $a = 0; $b = 1; $c = 1; for ($i = 1; $i < $n ; $i++) { $c = $a + $b; $a = $b; $b = $c; } return $c; } echo fibonacci(100)...
asked on 15.12.2015 / 17:45
1
answer

How to undo a "git add" before a commit?

I mistakenly added arquivos using the command git add and I have not yet executed a git commit . Is there a way to undo or remove these commit files?     
asked on 05.05.2015 / 18:07
1
answer

Requests for API Rest

The application uses Spring Rest in which the paths of a CRUD are generated automatically for each entity, I have the Vehicle, Contact and Agency entities and each one with its respective repository. Vehicle has as an attribute an Agency li...
asked on 14.07.2015 / 17:20
2
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What does "region above the fold" mean?

On the developers google page there are several quotes to this term: "Structure your HTML to load only the critical content of the region above the fold first " What would this region be like above the fold? what part of the HTML would it be?...
asked on 13.07.2015 / 16:37
1
answer

How does Symbol work in ES6?

In the new Javascript specification ECMAScript (ES6) was created a new primitive type called Symbol() what is its usefulness? / p>     
asked on 02.12.2015 / 20:41
2
answers

What is ASP.Net vNext? What is the correct name?

Okay, I know that ASP.Net vNext is the new version of ASP.Net being released by Microsoft in 2015 and it brings great changes changing how we work various things. This vNext name was used as the working name. Initially I had the idea that thi...
asked on 26.02.2015 / 14:08
3
answers

Is there a difference between Program, Thread and Process?

I would like to know if there is a difference between Thread , Process and Program ? These three words are widely used in the area of Information Technology, so it would be interesting to know the difference between each one if it exists,...
asked on 29.05.2016 / 06:23
4
answers

What would an Agile Development Process look like?

In the company that we work, we have not yet adopted a final methodology to use, and we are thinking of the next projects to adopt agile development. What would an agile process look like? Do I need to create a requirements document with full...
asked on 09.09.2014 / 01:49
2
answers

What is and what is the utility of the DUAL table for Oracle?

I came across this scenario while modifying a report in the system: One of querys is returning this table as DUAL : select * from dual But in the system there is no DUAL table, and the answer they gave me was that it was a native...
asked on 27.10.2017 / 19:08