Tutorial by Examples: re

Basic creation and usage

Anonymous pipes, or simply pipes, are kernel-managed objects exposed to processes as a pair of file descriptors, one for the read terminus and one for the write terminus. They are created via the pipe(2) function: int pipefds[2]; int result; result = pipe(pipefds); On success, pipe() record...

POSIX • Pipes

Creating a shell-style pipeline

A shell-style pipeline consists of two or more processes, each one with its standard output connected to the standard input of the next. The output-to-input connections are built on pipes. To establish a pipeline-like set of processes, one creates pipe-connected child processes as described in ano...

POSIX • Pipes

Creating a Hash Table

Example of creating an empty HashTable: $hashTable = @{} Example of creating a HashTable with data: $hashTable = @{ Name1 = 'Value' Name2 = 'Value' Name3 = 'Value3' }

PowerShell • HashTables

Using the Scala REPL

When you execute scala in a terminal without additional parameters it opens up a REPL (Read-Eval-Print Loop) interpreter: nford:~ $ scala Welcome to Scala 2.11.8 (Java HotSpot(TM) 64-Bit Server VM, Java 1.8.0_66). Type in expressions for evaluation. Or try :help. scala> The REPL allows ...

Scala Language • Getting started with Scala Language

Basic elm Http.post json request to node.js express server

Live upcase server that returns error when input string is longer than 10 characters. Server: const express = require('express'), jsonParser = require('body-parser').json(), app = express(); // Add headers to work with elm-reactor app.use((req, res, next) => { res.setHeader...

Elm Language • Backend Integration

Basic examples - Classification and Regression

###### Used for both Classification and Regression examples library(randomForest) library(car) ## For the Soils data data(Soils) ###################################################### ## RF Classification Example set.seed(656) ## for ...

R Language • Random Forest Algorithm

Using InMemory cache in ASP.NET Core application

To use an in memory cache in your ASP.NET application, add the following dependencies to your project.json file: "Microsoft.Extensions.Caching.Memory": "1.0.0-rc2-final", add the cache service (from Microsoft.Extensions.Caching.Memory) to ConfigureServices method in Startup...

asp.net-core • Caching

Recursive calculation for pi using OpenMP tasks

The code below calculates the value of PI using a recursive approach. Modify the MAX_PARALLEL_RECURSIVE_LEVEL value to determine at which recursion depth stop creating tasks. With this approach to create parallelism out of recursive applications: the more tasks you create, the more parallel tasks cr...

openmp • Irregular OpenMP parallelism

Create a new repository on Bitbucket website

Go to https://bitbucket.org/dashboard/overview Login to your Bitbucket account Choose repositories from the top menu, then choose Create Repository Choose the owner, enter the repository name and select if you want to have it public or private repository Choose the repository type (Git or Merc...

bitbucket • Create a new repository

Cloning a Git repository

Go to the repository you want to clone (something like: https://bitbucket.org/username/repo) On the left side, click on ... and choose Clone A small window will appear, copy the url (something like: git clone https://[email protected]/hamzawey/vm_dop_experiment.git) Open a terminal windo...

bitbucket • Clone existing repository

Using the 'predict' function

Once a model is built predict is the main function to test with new data. Our example will use the mtcars built-in dataset to regress miles per gallon against displacement: my_mdl <- lm(mpg ~ disp, data=mtcars) my_mdl Call: lm(formula = mpg ~ disp, data = mtcars) Coefficients: (Intercep...

R Language • Linear Models (Regression)

Getting started with Bitbucket - Create an account

Create an account Go to https://bitbucket.org/ Click on Get Started on the top right corner Enter your email address, and click continue Enter your full name, password and verification code. Then click Continue An email will be sent to you to verify that you created your account After that...

bitbucket • Getting started with bitbucket

How to add users and groups to an existing Bitbucket repository

Go to the Bitbucket repository you want to add users to. On the left, go to Settings (the last icon on the bottom left). Select Users and group access. Under Users, start typing the name or email address of the user whom you want to add. Select the privilege you want to grant that user (Read, ...

bitbucket • Add collaborators to a repository

2.EJS file example(refer 1.setting up... before this)

the following is an ejs file. <!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>Hello, world!</title> </head> <body> <%= message %> </body> </html>

express • View engine setup

3.rendering view with express(refer 2.EJS file... before this)

app.get("/",function(req,res){ response.render("index",{ //render the index when root(/) is requested message:"rendered view with ejs" }); });

express • View engine setup

4.after rendering final HTML is created(refer 3.rendering... before this)

<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>Hello, world!</title> </head> <body> message:"rendered view with ejs" </body> </html>

express • View engine setup

How to find what frameworks are available in the current version of Rails?

Use the config.frameworks option to get an array of Symbols that represent each framework.

Ruby on Rails • Rails frameworks over the years

Syntax Reference

You can use @Value("#{expression}") to inject value at runtime, in which the expression is a SpEL expression. Literal expressions Supported types include strings, dates, numeric values (int, real, and hex), boolean and null. "#{'Hello World'}" //strings "#{3.1415926}&qu...

spring • Spring Expression Language (SpEL)

These are the basics.

JVM is an abstract computing machine or Virtual machine that resides in your RAM. It has a platform-independent execution environment that interprets Java bytecode into native machine code. (Javac is Java Compiler which compiles your Java code into Bytecode) Java program will be running inside the...

Java Language • Java Virtual Machine (JVM)

Example feature file

Example Feature file: Feature: Calculator In order to avoid silly mistakes As a math idiot I want to be told the sum of two numbers @mytag Scenario: Add two numbers Given I have entered 50 into the calculator And I have also entered 70 into the calculator When I press ad...

specflow • Specflow Basics