**R** is a programming language that was created for statistical computation and is extremely popular for data analysis among Data Miners and Statisticians. R language has a Command Line Interface, but there are several other softwares that support Graphical User Interface such as Rstudio and Jupyter Notebooks. R includes methods like linear regression, time series, statistical interference, and even machine learning algorithms.

When working with R, users often want to check the version of R stored on their system to ensure that they do not use an outdated version. Here area couple of ways to check the version:

# Method 1
To check using the R console or RStudio, write `version` or `R.version()`:


# Method 2
If you are using RStudio, you can go to Tools -> Global Options to check your R version:

# Method 3
You can write `R --version` in the Linux terminal:

# press run button.
# terminal will appear.
# enter R --version command

import React from 'react';
import { shallow, configure } from 'enzyme';
import Adapter from 'enzyme-adapter-react-16';

configure({ adapter: new Adapter() });

import HelloWorld from './app';

var TestResult = function() {
    this.succeeded = false;
    this.reason = "";
    this.input = "";
    this.expected_output = "";
    this.actual_output = "";
}

export const executeTests = function() {

  var results = [];

  result = new TestResult();
  result.input = 'HelloWorld Component';
  result.expected_output = "span containing text 'Hello World'"

  let wrapper = shallow(<HelloWorld />);

  // Call your Challenge function here.

  let type = wrapper.type();
  let testSuccessful = true;
  let failureReason;

  if (type !== 'span') {
    testSuccessful = false;
    failureReason = "You need to render exactly one span HTML element";
  } else if (wrapper.props().children != "Hello World") {
     testSuccessful = false;
     failureReason = "You have rendered wrong message in your span element";
  }

  result.actual_output = wrapper.html();

  if (testSuccessful) {
    result.succeeded = true;
    result.reason = "Succeeded"
  } else {
    result.succeeded = false;
    result.reason = failureReason;
  }

  results.push(result);

  return results;
}


REnv

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Dart

GoJS React

Typescript React

Vue.js

mlxtend.tar.gz

How to check R version

R is a programming language that was created for statistical computation and is extremely popular for data analysis among Data Miners and Statisticians. R language has a Command Line Interface, but there are several other softwares that support Graphical User Interface such as Rstudio and Jupyter Notebooks. R includes methods like linear regression, time series, statistical interference, and even machine learning algorithms. When working with R, users often want to check the version of R stored on their system to ensure that they do not use an outdated version. Here area couple of ways to check the version: 