All Questions

2
answers

How can I send a file through a socket?

I'm doing a little chat with sockets in python, I'm trying to make it possible to send files through the chat, I thought about this to send the file: file = open("file.txt", "rb") content = file.readlines(1024) sock.send(content) file.close()...
asked on 10.08.2018 / 00:33
5
answers

problem with LEFT JOIN

With this function I show a list of exercises belonging to a course that come from a table called "lessons" with the following important columns: lessons.id, lessons.number, lessons.course_id entre otras. all users see the same user_id is...
asked on 13.08.2018 / 19:31
2
answers

Passing data from a table in HTML to an insert in Mysql with PHP

I hope you can help me. What happens is that I have a table in HTML that I am generating with javascript, but the result that it gives me, I must save it in a table that I have in my BD HTML Table: I already tried going through th...
asked on 14.08.2018 / 20:13
2
answers

Know if there is a number within a variable

In a variable I keep a number that is in my Oracle DB can be 236578898 but I just need to know if it brings the 2365 to perform an operation, account1 is where I keep the number if (int.Parse(cuenta1) == 2365) { //int valor1 = Int.Parse(TB...
asked on 10.08.2018 / 15:10
1
answer

Delete documents in MongoDB

I have a mongo database with a collection that has about 6,000,000 documents. I would like to know how to delete all the documents without deleting the database or the collection. I saw that with remove it can be done, but I doubt i...
asked on 13.08.2018 / 09:47
6
answers

set as value 0 if the input is empty

I'm doing a calculator in which you fill in the fields and do the operations, but how do I do it so that, if the input has no value, javascript interprets it as 0? var button = document.getElementsByTagName("input")[2]; var input1 = doc...
asked on 14.08.2018 / 19:56
2
answers

hover with jQuery when you click on div

I'm working with HTML5, CSS, Bootrap and JQuery. The problem is not to change the color to the div, what I can not do is to execute the action until you click on one of the divs. When you click on the payment button for extra hours, take the col...
asked on 09.08.2018 / 21:37
2
answers

Run two programs at the same time

Let's imagine that I have two scripts written in a python. The first is called programa_1.py and the second programa_2.py . To be executed, and because it opens some particular files, the programa_1.py needs to run in a...
asked on 28.11.2017 / 17:00
1
answer

Validate Javascript HTML form

Why would you let me send data if the fields are empty? I should get the alert and not let me continue. function validar_iniciar_sesion_cliente(){ var idemail, password1; idemail = document.getElementById("email").value; passwor...
asked on 27.11.2017 / 09:45
1
answer

Save fixes in database

I have arrangements that I want to save in the database, the arrays have around 1000 elements, should I save them in string or in what type? +--------------------+ tabla caracteristicas piel [datos] ojos [datos] expresi...
asked on 17.08.2018 / 17:50