1. The document introduces several Boost libraries updated in version 1.44.0, including Property Tree for managing hierarchical data, Uuid for generating unique IDs, Range 2.0 for range algorithms and adapters, Filesystem v3 with improved support for non-English paths, Polygon for 2D geometry algorithms, and Meta State Machine for declaring state machines.
2. Property Tree allows loading and accessing data from XML, JSON, and INI files stored in a tree structure. Range 2.0 extends Boost.Range with range algorithms and adapters that can lazily adapt and compose ranges.
3. Meta State Machine is a new state machine library that directly specifies state transitions in a table, allowing declaration of
MongoDB London 2013: Basic Replication in MongoDB presented by Marc Schwering...MongoDB
MongoDB supports replication for failover and redundancy. In this session we will introduce the basic concepts around replica sets, which provide automated failover and recovery of nodes. We'll show you how to set up, configure, and initiate a replica set, and methods for using replication to scale reads. We'll also discuss proper architecture for durability.
MongoDB London 2013: Basic Replication in MongoDB presented by Marc Schwering...MongoDB
MongoDB supports replication for failover and redundancy. In this session we will introduce the basic concepts around replica sets, which provide automated failover and recovery of nodes. We'll show you how to set up, configure, and initiate a replica set, and methods for using replication to scale reads. We'll also discuss proper architecture for durability.
Commit ускоривший python 2.7.11 на 30% и новое в python 3.5PyNSK
Автор доклада: Александр Сапронов.
Обзорный мини-доклад. В докладе вы найдете причину релиза 2.7.11 и новинки Python 3.5
Доклад сделан на 2 встрече сообщества PyNSK
Use C++ to Manipulate mozSettings in GeckoChih-Hsuan Kuo
If you want to manipulate mozSettings with JavaScript, you can reference to Settings API on MDN (https://developer.mozilla.org/en-US/docs/Web/API/Settings_API).
But if you want to manipulate it with C++, we can only reference to the codebase of Gecko. Now, let me show you some example.
A Brief introduction to Apache Storm. Talk given at the October Toronto Java User Group meeting, video available at https://www.youtube.com/watch?v=CWyH4-SOGm8
Commit ускоривший python 2.7.11 на 30% и новое в python 3.5PyNSK
Автор доклада: Александр Сапронов.
Обзорный мини-доклад. В докладе вы найдете причину релиза 2.7.11 и новинки Python 3.5
Доклад сделан на 2 встрече сообщества PyNSK
Use C++ to Manipulate mozSettings in GeckoChih-Hsuan Kuo
If you want to manipulate mozSettings with JavaScript, you can reference to Settings API on MDN (https://developer.mozilla.org/en-US/docs/Web/API/Settings_API).
But if you want to manipulate it with C++, we can only reference to the codebase of Gecko. Now, let me show you some example.
A Brief introduction to Apache Storm. Talk given at the October Toronto Java User Group meeting, video available at https://www.youtube.com/watch?v=CWyH4-SOGm8
Rust — это современный, практический, быстрый и безопасный язык программирования. Некоторые говорят, что Rust — это как C++, если бы его писал человек, знающий Haskell.
Система типов Rust решает главную проблему C++ — небезопасность. C++ очень легко сделать ошибки, которые приведут к поломкам (например, use after free). Rust позволяет писать безопасный код, сохраняя при этом выразительность и околонулевые накладные расходы C++. В докладе будут подробно описаны механизмы языка, которые контролируют безопасность программы.
Хотя в данный момент Rust ещё не подходит для использования в продакшне, его всё равно стоит изучать. Во-первых, потому что это очень интересный подход к программированию, а во-вторых, потому что через несколько лет для разработки требовательных к ресурсам программ будет необходим именно Rust или другой похожий инструмент.
Rust: код может быть одновременно безопасным и быстрым, Степан КольцовYandex
Последние 15 лет между разработчиками на Java и на C++ ведётся спор о том, какой язык программирования хуже — Java или C++. Программы на C++ глючат, падают, и в них утекает память. Программы на Java тормозят и требуют слишком много памяти.
Rust — новый язык программирования, разрабатываемый компанией Mozilla — решает проблемы Java и C++: программы, написанные на Rust, одновременно быстрые и безопасные. Rust является таким же низкоуровневым, close-to-metal языком программирования, как и C++, однако в язык встроены конструкции, позволяющие на этапе компиляции доказывать, что в программе не случится обращения к неинициализированной памяти (механизм borrowed pointers). Большая часть моего рассказа будет посвящена описанию этого механизма.
The heavyweight "process model", historically used by Unix systems, including Linux, to split a large system into smaller, more tractable pieces doesn’t always lend itself to embedded environments
owing to substantial computational overhead. POSIX threads, also known as Pthreads, is a multithreading API that looks more like what embedded programmers are used to but runs in a
Unix/Linux environment. This presentation introduces Posix Threads and shows you how to use threads to create more efficient, more responsive programs.
Create a JAVA program that performs file IO and database interaction.pdfmalavshah9013
Create a JAVA program that performs file IO and database interaction via SQL. The program
needs to read data from the provided file: \"Project.csv\" and insert the data into a database. Then
the program needs to create a report from the database sorted by price descending. The report
should be in the format demonstrated below.
id (primary key - generated by the database)
cpuname
performance
price
Project.csv contents:CPU NamePerformancePrice (USD)Intel Core i7-3770K @
3.50GHz9,556$560.50Intel Core i7-3770 @ 3.40GHz9,327$335.55Intel Core i7-3820 @
3.60GHz8,990$404.38AMD FX-8350 Eight-Core8,940$149.99Intel Core i7-2600K @
3.40GHz8,501$379.97Intel Core i7-2600 @ 3.40GHz8,242$214.99Intel Core i7-4720HQ @
2.60GHz8,046NAAMD FX-8320 Eight-Core8,008$145.99Intel Core i7-6700HQ @
2.60GHz7,997$1509Intel Core i7-4710HQ @ 2.50GHz7,826NAIntel Core i5-6600K @
3.50GHz7,762$239.99Intel Core i7-4700HQ @ 2.40GHz7,754$383.00Intel Core i7-4700MQ
@ 2.40GHz7,736$467.40Intel Core i5-4690K @ 3.50GHz7,690$239.99AMD FX-8150 Eight-
Core7,619$165.99Intel Core i7-3630QM @ 2.40GHz7,604$304.49Intel Core i5-4670K @
3.40GHz7,598$249.99Intel Core i5-4690 @ 3.50GHz7,542$224.99Intel Core i7-3610QM @
2.30GHz7,460$399.99Intel Core i5-4670 @ 3.40GHz7,342$226.99Intel Core i5-4590 @
3.30GHz7,174$199.99Intel Core i7-4702MQ @ 2.20GHz7,146NAIntel Core i5-3570K @
3.40GHz7,130$477.23
Solution
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.util.Arrays;
public class Main
{
/**
* This the main function that runs at the start
* param args - input arguments from the command line
*/
static public void main(String[] args)
{
CPUList cpuList = new CPUList(); //The CPUList used to retrieve data from the
fiile and store in the db
CPUList cpuListRetrieved = new CPUList(); //The CPUList used to retrieve data from the
database
CpuDb cpuDb = new CpuDb(); //The database object used to move data to and
from the CPU Lists
try
{
//Read in the file and store each line into the CPU objects in a list
Files.lines(Paths.get(\"Project04Data.csv\"))
.map(line -> line.split(\"\ \ \")) // Stream
.flatMap(Arrays::stream) // Stream
.forEach(line -> cpuList.AddCpu(line));
//Clear the list table for the new listing
cpuDb.Clear();
//Insert the Cpu List into the database
cpuDb.SetCpuList(cpuList);
//Retrieve the Cpu List into a different CPU List object from the database
cpuDb.GetCpuList(cpuListRetrieved);
//Show the report from the new list that was retrieved from the database
cpuListRetrieved.ShowReport();
} catch (IOException e)
{
e.printStackTrace();
}
}
}
CPUList.java
import java.util.ArrayList;
import java.util.Collections;
import java.util.Iterator;
public class CPUList
{
ArrayList theList = new ArrayList<>();
/**
* Default constructor for the CPU
*/
public void CPUList()
{
}
/**
* param strInputLine Input line to be used in creating the CPU object
*/
public void AddCpu(String strInputLine)
{
theList.add(new CPU(strInputLine));
}
/**
* param tempCPU - A CPU object to.
The presentation shows major features of the new C++ standard (language and the library). The full list of new things is very broad, so I've categorized them to be easier to understand.
Threads Advance in System Administration with LinuxSoumen Santra
Threads Advance in System Administration with Linux
Process Descriptor Handling
Kernel Stack
Pid_hash Table and Chained Lists
PID Hash Table Handling Functions and Macros
Wait Queues
Process Resource Limits
Task State Segment
System Calls
Pthread Operations
POSIX threads on GNU/Linux
Programs on Thread in C
Lab01Files/build.bat
@echo off
cls
set DRIVE_LETTER=%1:
set PATH=%DRIVE_LETTER%\MinGW\bin;%DRIVE_LETTER%\MinGW\msys\1.0\bin;c:\Windows;c:\Windows\system32
g++ -c Keyboard.cpp
g++ -c Random.cpp
g++ -c String.cpp
g++ -c ReadFile.cpp
g++ -c WriteFile.cpp
g++ -c PlayerGuessDriver.cpp
g++ -o PlayerGuess.exe PlayerGuessDriver.o ReadFile.o WriteFile.o String.o Keyboard.o Random.o
Lab01Files/Keyboard.cpp
#include "Keyboard.h"
#include <iostream>
int readInt(string prompt)
{
cout << prompt;
int val = 0;
cin >> val;
return val;
}
int getValidatedInt(string prompt, int min, int max)
{
int validated = readInt(prompt);
cout << validated << endl;
while(validated < min || validated > max)
{
validated = readInt(prompt);
cout << validated << endl;
}
return validated;
}
double readDouble(string prompt)
{
cout << prompt;
double val = 0;
cin >> val;
return val;
}
double getValidatedDouble(string prompt, double min, double max)
{
double validated = readDouble(prompt);
cout << validated << endl;
while(validated < min || validated > max)
{
validated = readDouble(prompt);
cout << validated << endl;
}
return validated;
}
String* readString(string prompt)
{
cout << prompt;
string text;
getline(cin, text);
String* str = createString(text.c_str());
return str;
}
Lab01Files/Keyboard.h
#if !defined KEYBOARD
#define KEYBOARD
#include "Text.h"
#include <string>
using namespace std;
//pre: the string (character literal) that will prompt the user for input
//post: the input read from the keyboard interpreted as an int is returned
int readInt(string prompt);
int getValidatedInt(string prompt, int min, int max);
//pre: the string that will prompt the user for input
//post: the input read from the keyboard interpreted as a double is returned
double readDouble(string prompt);
double getValidatedDouble(string prompt, double min, double max);
//pre: the string that will prompt the user for input
// the string to store the user input and the length of the input storage string
//post: the text read from the keyboard is copied into the storage string
String* readString(string prompt);
#endif
Lab01Files/Laboratory 01_ Guessing Game.pdf
8/28/2014 Laboratory 01: Guessing Game
http://mboshart.dyndns.org/boshart/2111Labs/Lab01.html 1/3
Laboratory 01: Guessing Game
Download the following files and place them in your working directory:
Starting code for this lab:
Lab01Files.zip //provided, completed files, refer to header files for method
signatures
PlayerGuessDriver.cpp //most of the work is in this file
range.txt //contains the two integers that define the range for the secret
number
build.bat //convenience file for compiling and linking
Guessing Game
In this lab, you will write a simple guessing game. The computer will generate a
random integer within a valid spe ...
14. Meta State Machine(MSM) 2/2
新たな状態マシンライブラリ。状態遷移表を直接記述する。
int main()
{
StopWatch watch;
watch.start();
watch.process_event(StartStopEvent()); // stop -> run
watch.process_event(StartStopEvent()); // run -> stop
watch.process_event(StartStopEvent()); // stop -> run
watch.process_event(ResetEvent()); // run -> stop
}