All Questions

2
answers

Move specific item to the right using flex

It turns out that I have a grid of thumbs and I'm using flexbox for the first time because of its simplicity and less use of lines in the code. I want to always place an advertising banner on the top right, the problem is that it is loaded...
asked on 08.06.2018 / 20:36
3
answers

Add total column and group by month in mysql

How do I add the total column and group by the column mes , but do not add me when the id_orden is repeated (218), and try to group them by month, and it looks like this: The sum of month 5 is 10 and the sum of month 1 gives 240, a...
asked on 17.05.2018 / 05:24
1
answer

Python: compare two files and export it

Searching the web I have managed to show the differences between two text files in a new one, with the following code: with open('file1.txt', 'r') as file1: with open('file2.txt', 'r') as file2: difference = set(file1).difference(f...
asked on 13.05.2018 / 17:24
1
answer

Problem when printing data from a POO php constructor [closed]

I'm studying POO in php, and I've done this code, but when I run it, the page goes blank and does not show me the data I've entered before, any help? <?php class coche{ var $ruedas; var $color; var $motor; } function __constru...
asked on 26.03.2018 / 07:05
1
answer

WiFi scans are not received when running startScan () on Android 8 with targetSdkVersion 26+

I'm working on an application that uses WiFi scans to work. I use the method startScan() of the class WifiManager and I have programmed a BroadcastReceiver to be notified when the scan has finished and the results can now be...
asked on 21.05.2018 / 14:02
2
answers

How to validate start date is less than end date Datepicker Boostrap

Good I'm doing a reservation system (I'm new to this). The only problem I have so far is that it does not validate that the "end" date is greater than the start date. Can anybody help me? I know it's simple but I'm learning HTML <input typ...
asked on 14.03.2018 / 01:13
1
answer

SqlBulkCopy: Error inserting a DateTime

I have a table with this structure: Create Table dbo.DoesNotMakeSense ( Id Int Not Null Identity (1, 1), Name NVarChar(100), CreationDate DateTime Not Null, Constraint PK_DoesNotMakeSense Primary Key Clustered (Id Asc) ) On [Primary]...
asked on 15.03.2018 / 01:18
2
answers

Ask before reloading / changing page

I mean confirm if you are sure to leave the current page I have a form, and I want to ask if the form has a filled field if you are sure to reload / exit the page I'm currently using window.onbeforeunload = function(e) { return "You...
asked on 14.03.2018 / 16:06
2
answers

How to make java recognize me a paragraph

only with a query. It's about that I'm creating a java game similar to Tamagochi from the 90's. You must have the option to create Pokemon, where you can enter the name of the Pokémon; in addition to this the player can enter an "image" of chara...
asked on 13.03.2018 / 03:01
1
answer

MySQL Error Code 1215: Can not add foreign key constraint

I'm trying to create a database with this script in MySQL But I get error 1215 that can not add the FK constraint I've reviewed but I can not find the problem. Could you help me see the problem? CREATE DATABASE IF NOT EXISTS mybase; use mybas...
asked on 23.03.2018 / 01:18