All Questions

2
answers

How to read a JSON response from AJAX?

How about? You see, I'm learning ajax and json; while I was doing some tests, I have a question that I have not been able to clarify and I would like you to help me. I explain: I have a code where I make an ajax request to get certain informa...
asked on 26.04.2018 / 21:57
1
answer

How to remove specific elements within a matrix in Python?

I did not know how to be more specific in the title, but the problem is that I'm doing a code for the problem of isomorphism of subgraphs (quite basic the truth), and I have a problem, I need to "decompose" a matrix, with this I mean the followi...
asked on 02.05.2018 / 16:44
2
answers

Mouseover and mouseout event in JavaScript

I'm doing a small test page in html, js, css and I have some pictures that when I pass the mouse I want the button to be added to erase each image and when it is not on the image disappears, I managed to make the event clear with mouseover and m...
asked on 27.04.2018 / 22:05
2
answers

How to validate a texbox that only lets me enter numbers up to 100

How can I validate a textbox so that it does not allow me to enter more than 100 in asp.net? Try doing that: <%= Html.TextBox("nota" + cont, item.nota, new { @class = "form-control", type = "number", min = "0", max = "100", id = "txtNot...
asked on 02.05.2018 / 13:35
1
answer

Problems downloading pdf by Chrome PHP

At the moment of selecting a pdf, the chrome browser visualizes it well, but if I want to download it, it does not work for me, it downloads a file with the name of the page that is ver.php index.php var listar = function(year) {...
asked on 30.04.2018 / 18:23
1
answer

Life time of a variable within a class

how I have a project where you read a csv file of thousands of lines a column of the CSV I save it and send it to a class where a list feeds my question is how long life has that list. once finished it will restart. or how would the lifetime of...
asked on 25.01.2018 / 19:18
1
answer

problem hibernate Envers "ID" Invaled Identifier

Good morning, my problem is as follows. I have to audit the entities of my application. For this I use the Hibernate Envers tool. I have all the entities I want to persist annotated with @Audited . I have also added the _AUD and REVI...
asked on 26.01.2018 / 13:35
1
answer

Error inserting records in two different tables from the same model

I want to insert records in 2 different tables from the same model. When I give it to save, it marks me:    Call to a member function bind_param () on boolean <?php error_reporting(E_ALL); require_once 'conexion.php'; $obj = json_decode...
asked on 19.01.2018 / 06:24
1
answer

Help with reference pass in C ++?

Hi, I'm "doing" a game like practice ... I need to pass by reference a player data type to a function in the enemy class, I can not directly add the "jugador.h" in "enemy.h" since it's included in another header, that's why I need...
asked on 25.01.2018 / 03:17
1
answer

Draw figure in Panel with Bitmap, C #

How can I draw these specific figures on the panels? I have two panels to which I want to draw these two figures:    A figure in each one, could put the image as such in the background property BackgroundImage of the panel,...
asked on 18.01.2018 / 14:59