All Questions

1
answer

Problem bookstore when aligning div elements and applying z-index

I'm trying to make a bookcase using CSS the problem arises when aligning elements with display:inline-block does not work, the other elements appear vertically (I try to make them horizontal) and also the z-index I can not a...
asked on 08.01.2018 / 00:47
1
answer

How can I put a variable of the same class as the class I am defining?

I'm doing a problem of A * and I need to save the father and then print the route. Everything works correctly until I ask the parent node in the printing method and it gives me this error:    "error.EXC_BAD_INSTRUCTION (code = EXC_I386_INVOP,...
asked on 15.12.2017 / 12:00
1
answer

Difference between numpy.empty and numpy.array

np.empty is considered a junk vector in which it serves to know what type of data contains the vector and a np.array returns an array, but in which case it is more convenient to use each of them.     
asked on 12.12.2017 / 22:23
1
answer

uncheck checkbox by selecting another

I have a group of checkbox , of which you can mark any of these, however now I need two of them to only allow me to mark one .. <div class="checkbox"> <label> <input type="checkbox" name="permisos" value="1"...
asked on 13.12.2017 / 00:26
1
answer

How to display messages of a 500 error in CodeIgniter?

I already tried with the directive init_set , the file index.php is set to ENVIRONMENT=DEVELOPMENT , I searched a lot on the web and nothing worked for me. I do not have access to server configuration files, that's why I ne...
asked on 24.01.2018 / 21:03
1
answer

dataGridView prevent relocation when updating

My program contains a dataGridView where a series of data is displayed, this is updated every X seconds with a Timer_tick , the problem is that in each update the selected row of DataGridView is again the first, the objective...
asked on 11.01.2018 / 10:39
1
answer

Control date between client and server in PHP

I have made a small event registration module, taking between date and time fields: YY-mm-dd H:i:s . Users who register can be from different time zones. Then an event scheduled for a moment could not correspond with the other clients....
asked on 08.02.2018 / 04:22
1
answer

Redirect multiple requests get in a single line or function

I have finished a website and I am creating the necessary 301 redirects in the file .htaccess . I have one of the old web sitemaps that has 100+ requests of the type: ?menu=nombre-del-plato On the new website there are no similar r...
asked on 10.05.2016 / 12:45
2
answers

Foreach of an object c #

Good afternoon, what I'm trying to do is set the attributes of a list of objects from a table with two for for the table and a foreach for the attributes of the object. I'm stuck on how to assign the value to the attribute. /*recorre las fila...
asked on 20.02.2016 / 00:58
1
answer

How to make an autoincrementable field in oracle 11g?

The table is as follows. create table ventas( id_venta number(5) primary key, id_articulo number(5) references articulos, id_empleado number(6) references empleado, id_cliente number(5) references cliente, cantidad numbe...
asked on 30.12.2017 / 00:36