awesomebytes

Using the Qt serialbus (to access a CAN bus) in Ubuntu 18.04

I was trying to compile a Qt project that uses the Qt serialbus module and it was not configuring when using qmake, the error was: Unknown module(s) in QT: serialbus. So I needed to build qtserialbus myself.

While trying to build it I ran into: fatal error: private/qobject_p.h: No such file or directory.

# Overkill: get all qt-stuff
sudo apt install qml-module-qt-labs-folderlistmodel qml-module-qtquick-extras qml-module-qtquick-controls2 qt5-default libqt5quickcontrols2-5 qtquickcontrols2-5-dev qtcreator qtcreator-doc libqt5serialport5-dev build-essential qml-module-qt3d qt3d5-dev qtdeclarative5-dev qtconnectivity5-dev qtmultimedia5-dev

vikpe

Error

The authenticity of host 'github.com (140.82.113.4)' can't be established.

Fix

ssh-keyscan github.com >> ~/.ssh/known_hosts

LionZXY

Под общей редакцией А.В. Пролетарского - Технологии коммутации и маршрутизации в локальных компьютерных сетях - 2013
А.Ф. Третьяков, Л.В. Тарасенко - Материаловедение и технологии обработки материалов - 2014
В.П. Строгалев, И.О. Толкачева, Н.В. Быков - Основы прикладной газовой динамики - 2014
О.П. Феоктистова, Е.Б. Гартиг, А.А. Пожалостин, А.А. Панкратов - Кинематика точки и простейшие движения твердого тела - 2012
Под редакцией И.П. Мачневой - Сборник домашних заданий для студентов специальности "Средства поражения и боеприпасы". Часть 2 - 2014
Т.М. Волосатова, С.В. Родионов, Д.Т. Шварц - Прикладное программирование на языке C++ - 2015
В.С. Попов - Линейная алгебра - 2016
М.В. Белодедов, О.М. Михайлова, М.М. Абулкасимов - Электротехника - 2015
И.В. Телеснина - Танцуем с удовольствием - 2008
С.В. Резник, О.В. Денисов - Постановка тепловых испытаний элементов композитных стержневых космических конструкций. Часть 1. Расчетно-теоретические исследования (2-е издание) - 2017

jstnlvns

Git sees every file in your working copy as one of three things:

1. tracked - a file which has been previously staged or committed;
2. untracked - a file which has not been staged or committed; or
3. ignored - a file which Git has been explicitly told to ignore.

Ignored files are usually build artifacts and machine generated files that can be derived from your repository source or should otherwise not be committed. Some common examples are:

• dependency caches, such as the contents of /node_modules or /packages
• compiled code, such as .o, .pyc, and .class files

blackvitriol

import QtQuick 2.0
import QtQuick.Window 2.0
import QtLocation 5.6
import QtPositioning 5.6

Rectangle {
            width: 1500
            height: 1000
            visible: true

lb5160482

inline float SIGN(float x) { 
	return (x >= 0.0f) ? +1.0f : -1.0f; 
}

inline float NORM(float a, float b, float c, float d) { 
	return sqrt(a * a + b * b + c * c + d * d); 
}

// quaternion = [w, x, y, z]'
Mat mRot2Quat(const Mat& m) {

geohot

def ransac_polyfit(x, y, order=3, n=20, k=100, t=0.1, d=100, f=0.8):
  # Thanks https://en.wikipedia.org/wiki/Random_sample_consensus
  
  # n – minimum number of data points required to fit the model
  # k – maximum number of iterations allowed in the algorithm
  # t – threshold value to determine when a data point fits a model
  # d – number of close data points required to assert that a model fits well to data
  # f – fraction of close data points required
  
  besterr = np.inf

chris-marsh

// QTextDocument printing example written by David Faure for EADS
// Compared to QTextDocument::print, it allows to add a page header and footer.

#include <QPrinter>
#include <QPainter>
#include <QProgressDialog>
#include <QApplication>
#include <QTextDocument>
#include <QTextTableCell>
#include <QTextCursor>

mistic100

#ifndef QCHECKLIST
#define QCHECKLIST

#include <QWidget>
#include <QComboBox>
#include <QStandardItemModel>
#include <QLineEdit>
#include <QEvent>
#include <QStyledItemDelegate>
#include <QListView>