Merge pull request #328 from biswajitdas-007/javascript

String methods added

languages/javascript.js

@@ -95,3 +95,9 @@ arr.reduce(callback[, initialValue])                 // Apply a function against
 arr.reduceRight(callback[, initialValue])            // Apply a function against an accumulator and each value of the array (from right-to-left) as to reduce it to a single value.
 arr.some(callback[, initialValue])                   // Returns true if at least one element in this array satisfies the provided testing function.
 arr.values()                                         // Returns a new Array Iterator object that contains the values for each index in the array.
+
+// String methods
+String.charAt(index)                                 // Returns the character at the specified index in a string.
+String.indexOf(character)                            // Returns the index of the first occurrence of a specified value in a string.
+String.substring(starting_index, ending_index)       // Returns a new string that is a subset of the original string.
+String.substring(starting_index)                     // Returns a substring from starting index to last index of string.

languages/typescript.sh

@@ -1,227 +0,0 @@
-# *****************************************************************************
-# Introduction to TypeScript
-# *****************************************************************************
-
-# What is TypeScript?
-# TypeScript is a strongly typed programming language that builds on JavaScript, giving you better tooling at any scale.
-# It's a superset of JavaScript, which means all JavaScript code is valid TypeScript, but TypeScript has additional features like static typing, interfaces, and generics.
-
-# Why Use TypeScript?
-# - Provides type safety on top of the JavaScript, reducing runtime errors.
-# - Makes the code more readable and maintainable.
-# - Offers great tooling support with IntelliSense in popular editors.
-# - Facilitates easier refactoring and debugging.
-
-# *****************************************************************************
-# Installing TypeScript
-# *****************************************************************************
-
-# Prerequisites:
-# - Ensure Node.js is installed on your system. If not, download and install it from https://nodejs.org/
-
-# Installation:
-# - TypeScript can be installed as a Node.js package globally or in your project using npm (Node Package Manager).
-# - To install TypeScript globally, use the following command in your terminal:
-npm install -g typescript
-
-# Checking Installation:
-# - To verify that TypeScript has been installed correctly, you can check its version:
-tsc --version
-
-# Compiling TypeScript to JavaScript:
-# - Once installed, you can compile .ts files to .js using the TypeScript compiler. For example:
-tsc hello.ts
-
-# *****************************************************************************
-# Basic Syntax and Data Types
-# *****************************************************************************
-
-// Boolean type
-let isDone: boolean = false;
-
-// Number type
-let decimal: number = 6;
-
-// String type
-let color: string = "blue";
-
-// Array type
-let list: number[] = [1, 2, 3];
-
-// Tuple type
-let tuple: [string, number] = ["hello", 10];
-
-// Enum type
-enum Color { Red, Green, Blue }
-
-// Any type
-let notSure: any = 4;
-
-// Void type
-let unusable: void = undefined;
-
-// Null and Undefined
-let u: undefined = undefined;
-let n: null = null;
-
-# *****************************************************************************
-# Functions
-# *****************************************************************************
-
-// Function with no return type
-function warnUser(): void { /* ... */ }
-
-// Function with return type
-function buildName(firstName: string, lastName: string): string { /* ... */ }
-
-// Function with optional parameters
-function buildNameOptional(firstName: string, lastName?: string): string { /* ... */ }
-
-// Function with default parameters
-function buildNameDefault(firstName: string, lastName = "Smith"): string { /* ... */ }
-
-# *****************************************************************************
-# Interfaces
-# *****************************************************************************
-
-// Simple interface
-interface LabelledValue {
-    label: string;
-}
-
-// Function in an interface
-interface SearchFunc {
-    (source: string, subString: string): boolean;
-}
-
-// Indexable types
-interface StringArray {
-    [index: number]: string;
-}
-
-// Class types in interfaces
-interface ClockInterface {
-    currentTime: Date;
-    setTime(d: Date): void;
-}
-
-# *****************************************************************************
-# Classes
-# *****************************************************************************
-
-// Basic class
-class Greeter {
-    greeting: string;
-    constructor(message: string) { this.greeting = message; }
-    greet() { return "Hello, " + this.greeting; }
-}
-
-// Inheritance
-class Animal {
-    move(distanceInMeters: number = 0) { /* ... */ }
-}
-class Dog extends Animal {
-    bark() { /* ... */ }
-}
-
-// Class with interfaces
-class Clock implements ClockInterface {
-    currentTime: Date = new Date();
-    setTime(d: Date) { this.currentTime = d; }
-}
-
-# *****************************************************************************
-# Advanced Types
-# *****************************************************************************
-
-// Union types
-function padLeft(value: string, padding: string | number) { /* ... */ }
-
-// Intersection types
-interface BusinessPartner {
-    name: string;
-    credit: number;
-}
-type Contact = BusinessPartner & { email: string };
-
-// Type guards
-function isFish(pet: Fish | Bird): pet is Fish { /* ... */ }
-
-// Nullable types
-function f(sn: string | null): string { /* ... */ }
-
-// Type Aliases
-type NameOrNameArray = string | string[];
-
-// Generics
-function identity<T>(arg: T): T { return arg; }
-
-# *****************************************************************************
-# Enums and Namespaces
-# *****************************************************************************
-
-// Numeric enums
-enum Direction { Up = 1, Down, Left, Right }
-
-// String enums
-enum Response { No = "NO", Yes = "YES" }
-
-// Namespaces
-namespace Validation {
-    export interface StringValidator {
-        isAcceptable(s: string): boolean;
-    }
-}
-
-# *****************************************************************************
-# Modules
-# *****************************************************************************
-
-// Importing modules
-import { moduleName } from "module";
-
-// Exporting from modules
-export function someFunction() { /* ... */ }
-
-// Default exports
-export default class SomeType { /* ... */ }
-
-# *****************************************************************************
-# Decorators
-# *****************************************************************************
-
-// Class decorator
-function sealed(constructor: Function) { /* ... */ }
-
-// Method decorator
-function enumerable(value: boolean) {
-    return function (target: any, propertyKey: string, descriptor: PropertyDescriptor) { /* ... */ };
-}
-
-// Accessor decorator
-function configurable(value: boolean) { /* ... */ }
-
-# *****************************************************************************
-# Type Assertions
-# *****************************************************************************
-
-let someValue: any = "this is a string";
-let strLength: number = (someValue as string).length;
-
-# *****************************************************************************
-# Miscellaneous
-# *****************************************************************************
-
-// Type inference
-let x = 3; // `x` will be inferred as `number`
-
-// Type compatibility
-interface Named {
-    name: string;
-}
-let x: Named;
-let y = { name: "Alice", location: "Seattle" };
-x = y; // OK
-
-// Ambient declarations
-declare var $: JQuery;

tools/ubuntu.sh

@@ -21,6 +21,7 @@ cat /proc/<process_id>/maps   # Show the current virtual memory usage of a Linux
 ip r # Display ip of the server
 
 lsof -i :9000 # List process running on port 9000
+kill -9 $(lsof -t -i:PORT) # Kill the process running on whichever port specified
 
 journalctl -u minio.service -n 100 --no-pager # List last 100 logs for specific service