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How to interpolate strings in Kotlin programming language

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Kotlin programming language has string interpolation similar to template literals in JavaScript For JavaScript You can write as; var passage = `I'm going todo a ${chore}` In Kotlin you can do string interpolation as; var passage = "I'm going todo a $chore" Interpolating expressions in kotlin is done as; var state = "I'm done with ${numChores()} chores"
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Animated sky on HTML5 Canvas

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So far I've added a new bunch of clouds, some stars and a phase changing moon' As the number of Clouds increased i cursed them into an Array and created two more Obstacles the Moon and Stars Here's progress. (Extended preview) In extended preview i added trees and buildings. (everything is drawn programmatically without using static Images)
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How to use fetch api submit an html form

Fetch api allows asynchronous means of reading files and a more simplified way of making http requests in JavaScript. How to submit an existing html form using fetch api; Assuming you have html source code with a form and some input fields; <form id="form" action="./submit" method="post" onsubmit="handle(event)"> <input name="query"> <button>     submit </button> </form> You can pass an instance of a dom form to formData constructor as the first parameter; const handle = function(event) {     event.preventDefault()     const data = new formData(event.target) fetch('//localhost/api/post', {     method: 'POST',     body: data }) } Fetch api returns a new pending promise to process the response you will need to await asynchronous process once ready to consume parse it as follows; .then(response => response.json()) .then(response => console.log(response))
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How to evaluate a string on a regular expression rule in JavaScript

JavaScript has a built in regular expression function for testing if a string arguments is matching the given regular expression rule; Syntax of the regular expression tester is as follows; /regex/.test(string) Take for instance you want to test if a string contains only alphanumeric upper and lower case characters, space and numbers; const str = "Eat code sleep" /[A-Z,a-z,0-9, ]*/.test(str) // returns boolean 'true' Or in another example; const str = "Eat, Code, Sleep" /[A-Z,a-z,0-9, ]*/.test(str) // returns boolean 'false' Because commas are not included in the regular expression match rules.
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How to install Kotlin programming language

Kotlin is a programming language that is statically typed runs on the JVM and can compile to JavaScript To install kotlin using the Software Development Kit on Debian Ubuntu or Linux environment. First install the SDK using Command: wget -O sdk.install.sh "https://get.sdkman.io" bash sdk.install.sh To install kotlin Type the command: source ~/.sdkman/bin/sdkman-init.sh sdk install kotlin To install Java development kit (JDK) a vital dependency used for execution and compilation of kotlin code. Type the command: sudo apt-get install openjdk-8-jre-headless To confirm installation type the command: kotlin -version It should return output similar to one below Kotlin version 1.3.61-release-180 (JRE 1.8...)
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