hhimanshu

package com.learner.s99

/**
 * P05 (*) Reverse a list.
 * Example:
 * scala> reverse(List(1, 1, 2, 3, 5, 8))
 * res0: List[Int] = List(8, 5, 3, 2, 1, 1)
 */
object P05 {
  def reverse[T](l:List[T]): Option[List[T]] = reverse(l, Nil)

hhimanshu

package com.learner.s99

/**
 * P06 (*) Find out whether a list is a palindrome.
 * Example:
 * scala> isPalindrome(List(1, 2, 3, 2, 1))
 * res0: Boolean = true
 */
object P06 {
  def isPalindrome[T](l:List[T]):Boolean = l == l.reverse

hhimanshu

Reference: http://fideloper.com/mac-vim-tmux

Don't forget to open a file via vim and installing bundles via :BundleInstall

hhimanshu

import java.io.*;
import java.util.*;

/*
 * To execute Java, please define "static void main" on a class
 * named Solution.
 *
 * If you need more classes, simply define them inline.
 */

hhimanshu

-module(mathStuff).
-export([perimeter/1]).

perimeter({circle, Radius})     -> 2 * math:pi() * Radius;
perimeter({square, Side})       -> 4 * Side;
perimeter({triangle, A, B, C})  -> A + B + C.

hhimanshu

-module(recursive).
-export([minimum/1, maximum/1]).

minimum([]) -> io:format("can not find minimum of empty list~n");

minimum([H|T])  ->
        minimum(H, T).

minimum(Min, [H|T]) ->
        case Min < H of

hhimanshu

import * as admin from "firebase-admin";

export const getFirebaseApp = (credentialsJsonFile, appName) => {
    let fbAdmin = admin.initializeApp({
        credential: admin.credential.cert(credentialsJsonFile)
    }, appName);
    return fbAdmin.firestore();
};

hhimanshu

% http://www.erlang.org/course/exercises.html
% Write functions temp:f2c(F) and temp:c2f(C) which convert between centigrade and Fahrenheit scales. (hint 5(F-32) = 9C)
-module(temp).
-export([c2f/1, f2c/1, convert/1]).

c2f(C) -> (C *9/5) + 32.
f2c(F) -> (F - 32) * 5/9.

convert({From, What}) ->
        case {From, What} of

hhimanshu

for loop

let numUsers = 0;
for(let num = 0; num < 22; num++){
  numUsers = numUsers+1;
}
console.log('Number of users are: '+ numUsers); //implicit coercison from number to string

hhimanshu

export const VideoPlayer = ({youtubeId}: VideoPlayerProps) => {
    useEffect(() => {
        const options = {
            noCookie: false,
            rel: 0,
            showinfo: 1,
            iv_load_policy: 3,
            modestbranding: 1
        }
        if (typeof document !== `undefined`) {