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Development Drivers Linux Ubuntu

Nvidia driver causes screen lag

I just installed Ubuntu 16.04, and I am having a problem with screen lag. This problem was not present before I installed nvidia drivers. it seems to be a common issue, but I have not found any solutions that work.

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Development Linux Ubuntu Windows

Windows 10 and Ubuntu freeze at the (blue window logo / purple screen) only if I restart from Ubuntu

Good evening, as always thank you for your time and help. I have this annoying problem. Context I decided to install Ubuntu 18.04 LTS in the secondary drive and Windows 10 is in the SSD. The computer is an Alienware Area 51 R5 with the following specifications: 220 [GB] NVMe (Windows 10 is here) 2 […]

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Development

Looping over multiple data frames to ggplot

I am very new to the language. I have read in multiple csv files as dataframes, setwd(“/Users/user/go/src/Project/outputcsv2D”) file_list <- list.files(path=”/Users/user/go/src/Project/outputcsv2D”) filenames <- gsub(“\\.csv$”,””, list.files(pattern=”\\.csv$”)) for(i in filenames){ assign(i, read.csv(paste(i, “.csv”, sep=””))) } but when I try to loop over the filenames[i] to plot, #making a list of plots plot_list = list() for (i in filenames) […]

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Development

Get totals of each month a year including the month with no result

I want to echo the total of invoices created per month. Code below is working so far but I need a 0 if there is no result in a month. $sql = “SELECT MONTH( invoice_date ) AS MONTH, SUM(`invoice`.`total`) as total FROM `invoices` WHERE YEAR(invoice_date) = ‘2019’ GROUP BY MONTH(invoice_date)”; $result = mysqli_query($con,$sql); while($data = […]

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Development

XSD validation error. “A Problem Was Found Starting At: Attribute”

I am validating my XSD through https://www.freeformatter.com/xml-validator-xsd.html but it throws an error The content of sequence must match (annotation?, (element | Group | Choice | Sequence | Any)*). A problem was found starting at: Attribute I need to make NOT NULL for the reportType. I used attribute (use=”required”) and tried to move the attribute out […]

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Development GitHub

How to alter dropEvent action in treeview without loosing basic drag-n-drop functionality in PyQt5?

I’m using my custom item model (subclassed from QAbstractItemModel) with custom QTreeView. I want to allow internal drag-n-drop movement (MoveAction) and, when modifier key or right mouse button is pressed, pass CopyAction to my model (to dropMimeData) to copy items. However, default implementation of dropEvent() in QTreeView seems (from C code) only capable of passing […]

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Development PHP

Get with PHP Array Tree Values Recursively with start and stop limit level

I am making a module for creating navigation menus and I would like to give the possibility to set an initial and final level. I have this array tree with level how can return it setting a start level and stop level ? this is my function that return empty. Original Array: Array ( [0] […]

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Development Java

Unable to resolve java build / Spring

First Thing to say, I am a relatively inexperienced programmer. My task is to import a given gradle project into Spring Boot Tool Suite (sts). I have already download springboot cli, java, gradle. & In the past, I was able to run spring perfectly on another project, unfortunately I had to get my hard drive […]

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Development Linux

Samba 4.11 and des-cbc-md5

I know is not secure, but I want to know how to enable des-cbc-md5 on Samba 4.11, in this doc they wrote ” des-cbc-md5 (disabled by default) des-cbc-md5 can be enabled by enabling DES at a user-level, but this is generally not considered secure, which is why it is disabled by default. “ What does […]

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Cryptocurrency Development Ethereum

Node synchronization

The question is about the node, is the node functionality enough in fast synchronization for the functioning of a centralized exchange? Or is it necessary to download a node in full synchronization?