koji

$ openssl genrsa 2048 > server.key
$ openssl req -new -key server.key > server.csr
$ openssl x509 -days 3650 -req -signkey server.key < server.csr > server.crt

ssl
server.key
server.csr
server.crt

koji

Most active GitHub users in Worldwide https://commits.top/worldwide.html

42/256. 07/16/2020

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koji

const originalArray = [1, 2, 3, 4, 1, 2, 3, 4];

const uniqueArray = new Set(originalArray);
console.log(uniqueArray);

const originalArray = [1, 2, 3, 4, 1, 2, 3, 4]

koji

const num = 1;
const ret = ( '000' + num ).slice( -3 );
console.log(ret);

koji

$ chsh -s /bin/bash # zsh --> bash
$ chsh -s /bin/sh # bash --> zsh

save screenshots in Screenshot folder

$ defaults write com.apple.screencapture location /Users/[your_username]/Screenshots

koji

const fibonacci = n =>
  Array.from({ length: n }).reduce(
    (acc, val, i) => acc.concat(i > 1 ? acc[i - 1] + acc[i - 2] : i),
    []
  );

fibonacci(5);

koji

def factorial(n):
    if n > 1:
        return n * factorial(n-1)
    else:
        return 1

koji

1. Date.getTime() Get the time in milliseconds elapsed since .

2. Date.getFullYear() Get the four-digit year ().

3. Date.getMonth() Get the Date object's month as a zero-indexed number ().

4. Date.getDate()

koji

function solution(A) {
  let result = 0;

  for (let element of A) {
    result ^= element
  }

  return result
}

koji

1. install watchman

$ brew install watchman

2. install jdk

brew tap AdoptOpenJDK/openjdk
brew cask install adoptopenjdk8