All Questions

1
answer

Fill HTML table using 3 PHP Arrays

I write about a problem when displaying an HTML table using 3 different arrays. I explain my problem a bit: I have an arrangement where I get some ID's, these ID's should go in the header of the HTML table, the result will always be 33 r...
asked on 13.06.2017 / 16:23
2
answers

Read long text with voice on Android using TextToSpeech

I am implementing text reading with voice in
asked on 11.10.2017 / 16:32
1
answer

what is the limit of an id, in database?

I have a database in Postgres that is already running a week and the amount of data entered is 3788, this number reflects the id of my table, plus I am informed that this amount is similinar per week. I create the id in t...
asked on 01.04.2018 / 00:54
2
answers

Differences between nested AJAX and promises

In another question of StackOverflow in Spanish is done reference to nested AJAX calls and the response suggests using promises instead of nesting AJAX calls. And from there I have some doubts. Note: I'm going to use jQuery notatio...
asked on 02.02.2016 / 23:53
3
answers

What is the difference between REST and RESTful?

I understand that they are architectures and that the idea of these is once downloaded the web page this does not re-download any HTML or CSS or JS if not, that only makes calls or requests and is answered with JSON     
asked on 13.01.2016 / 23:15
3
answers

Create Chron on Android

I'm trying to make a cron run every X time in the system android tag to call a service that I have made. The features of cron that I want to do are the following: run independently if the Application is running or not (partially d...
asked on 27.10.2016 / 10:00
2
answers

var, let, const ... or nothing in Javascript

The following question: When it is convenient to use var, let and const in ECMA Script 6? responds in part to my question, but not entirely. Reading the accepted answer, I understood that: let declares a local scope variable...
asked on 29.09.2017 / 16:56
3
answers

Know when the App is launched for the first time on Android

How can you tell if it's the first time the app starts? It would be interesting, in the case that the user updates the application is detected as new or update.     
asked on 27.01.2016 / 21:15
1
answer

Side headboards on tables

How can I create left side headings in tables? For example, I have the following table: <table border="1" cellspacing="0"> <thead> <tr> <th>Titulo 1</th> <th>Titulo 2</...
asked on 01.03.2017 / 18:38
4
answers

Addition and subtraction in a chain

I need to implement the following: Entry (a string): 5+45+100-125+5-10 Exit: = 20 Here the code implemented only for positive numbers: String operacion="10+200+3000"; int tam = operacion.length(); String A[] = new String[1...
asked on 09.12.2016 / 01:36