All Questions

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Utility of "" .join ()

I would like to know the usefulness and functionality of this method (actually I do not know if it is a method) ".".join . I have seen it in several examples and forums but its concept has not yet become clear to me. If you could give me a...
asked on 24.09.2017 / 17:41
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Help to send AJAX with NippleJS

I'm using nippleJS: link I'm not 100% sure if it's possible to send the joystick information but I'd say yes. I want to send an AJAX form with the position of the joystick and I want it to be in real time to control some engines. I can not...
asked on 06.10.2017 / 20:43
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Delete a node / div - DOM - Javascript

I put you in situation. I have a form with id="miformulario" in which there are 2 buttons ( btnEnviar , to send the form and show in a box / div certain elements of the form, and btnEliminar , to eliminate the box /...
asked on 20.05.2017 / 11:41
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Create map in R with ggmap

I have a database that every time an issue is generated creates a new entry, one of the parameters I have is latitude and longitude. I want to create a code in R that takes those values of latitude and longitude and generates a map of Mexico tha...
asked on 16.10.2017 / 21:05
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Multiply matrices using the thread API in JAVA

I have never worked with threads and this will be my first time. How can I multiply two matrices using the thread API in JAVA? So far I have the code to create and multiply the matrices: public class main { public static void main...
asked on 11.10.2017 / 20:12
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I can not delete all spaces in a string

Good morning, I do not know if I'm doing something wrong. I just want to eliminate the spaces at each end of a string, for that I use .trim() . The code that I have: String quedan = doc.select(".c-price .text-muted").first().text(); /...
asked on 21.05.2017 / 09:20
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Exception: java.lang.ClassCastException: weblogic.xml.jaxp.RegistrySAXParserFactory can not be cast to javax.xml.parsers.SAXParserFactory

When I deploy my Web Application in the WebLogic it sends the following error:    exception java.lang.ClassCastException:   weblogic.xml.jaxp.RegistrySAXParserFactory can not be cast   javax.xml.parsers.SAXParserFactory Someone could pl...
asked on 11.10.2017 / 18:30
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Download html content and save to BD [closed]

I need a script that connects to an auction site, downloads them and stores them in a database. This is an example of the information that appears Auction: xxxxxxxxx Value Offered: xxxxxxxxxxx Good: xxxxxxxxxxxx They could help me...
asked on 25.05.2017 / 04:56
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Export I leave without the name of the columns

I'm trying to export a table and I get it right but without the headers. Can you help me? This is what I have done so far declare @sql varchar(8000) select @sql = 'bcp "select * from Ana.dbo.detalle_incidencias" queryout C:\prueba.csv -c -t, -...
asked on 22.05.2017 / 08:39
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Take out an sql query

Hello, good morning and I look forward to your help. I need to get out of the table restaurant: and the table user: all those restaurants that do not belong to a user in this case is 3 (empty restaurant name), because as you...
asked on 20.05.2017 / 08:17