All Questions

2
answers

What is the suffix _t and when to use it?

I see in many codes some variables with the suffix _t . There are a lot of examples in the default C library as size_t , int32_t , mbstate_t . How useful, and when to use this suffix?     
asked on 29.09.2016 / 15:48
1
answer

Click event in a TextField conflicts as JOptionPane

I am learning how to create a sales system and I created this method to get information from a TextField and play within a table via the click of the enter button. I created a try-catch to handle exceptions, and if I enter the catch, it opens a...
asked on 17.05.2018 / 20:16
2
answers

Convert a list with dataframes of different rows into independent dataframes [R]

I have a list of 3 dataframes, which are derived from the split function: > split $'1' bin group1 group2 missing score1 score2 gender size score3 income city 0 1 1 NA 3 2 M S 4 1605....
asked on 21.08.2018 / 03:35
1
answer

How to make the properties of a User Control accessible in XAML?

A User Control can be used for a variety of purposes, but I'd like to know specifically a simple example of how to create a User Control / p> For example a NumericUpDown : CreatedfromthisXAML:<UserControlx:Class="TCC_2.Templates.Nu...
asked on 18.12.2016 / 21:12
1
answer

How to extract text in parentheses with regex in php

I have the text: Regular expressions (often abbreviated to "regex") are a declarative language used for correspondence. How do I get the content included between parentheses? I tried: $texto = "As expressões regulares (muitas vezes ab...
asked on 31.10.2016 / 17:42
1
answer

What is the difference between "dependencies" and "devDependencies"?

What's the difference between saving a component like dependencies or devDependencies in bower , npm , composer and others that use this structure?     
asked on 07.11.2016 / 00:51
1
answer

How do I switch between the next element and the previous element of a ListIterator with just one click?

I have a list of words stored in my listaPalavra variable already initialized with values, of type ArrayList<T> : listaPalavra.add("Palavra 1"); listaPalavra.add("Palavra 2"); listaPalavra.add("Palavra 3"); listaPalavra.add(...
asked on 31.10.2016 / 02:11
2
answers

How to calculate installments (R $) and fill in inputs?

I would like help to implement the calculation of plots and fill / create the inputs according to the number of plots. Code below and link : $(document).ready(function(e) { $('#condicao-pag').on('change', 'select', function() {...
asked on 24.12.2016 / 21:05
2
answers
2
answers

Is there a difference between Post and Request?

When I read about request I always get the term post together, and this raises a question. I understand that request serves to make a request for something to the server and then the server sends a response after processing such a reques...
asked on 25.09.2016 / 20:01