aleph-naught2tog

CORS wtf

preflight

tl;dr

• yes, cross-origin includes different port numbers. to the IT students everyone pulling their hair out because two localhosts on your machine can't talk to each other: we salute you.
• what is a simple request?
  • one of [GET, HEAD, POST] -- no side effects.
  • the ONLY manual (ie, not added by the browser) headers allowed are:
    • Accept
    • Accept-Language
• Content-Language

aleph-naught2tog

const fs = require('fs'); // the node file system package
const path = require('path');

// Usage: 
//    node file_tree.js name_of_folder_to_get_files_from 
//    node file_tree.js

// Either a passed-in-folder name (process.argv[2])
// or default to the current working directory
const folder = process.argv[2] || process.cwd();

aleph-naught2tog

[
    ["xqBt3ImNzJbYqRINxEFlkg==", "K7DJLdLooIwIG/MOpvWFB3y3FE8="],
    ["AQIDBAUGBwgJCgsMDQ4PEC==", "OfS0wDaT5NoxF2gqm7Zj2YtetzM="],
    ["dGhlIHNhbXBsZSBub25jZQ==", "s3pPLMBiTxaQ9kYGzzhZRbK+xOo="],
    ["bLqBK0TPRX06acXKoTMg0w==", "PUOv+s9LKpmD8Eqd/JHHU3/0+ts="],
    ["cGtZLupHO2Ng7bTySyqJAg==", "7PZjZ/xia21YsFgao3D7dGKk/nk="],
    ["T3CQ1QBhwQU+ART28dF1lg==", "nVnvAbc8RUGnQU+7M+SrTTBmXlA="],
    ["A4soB7HbG+RDb/0K4pOfQQ==", "6hlHUdFX8bFPzGrYhEd5DrkgeZY="],
    ["IUe1bWHff0Oe6/6Kwz0S7g==", "YNvyb2r1JRBDCxcvgvbpZwMinqA="],
    ["ZcifuDaMvDry71n+ffJZIQ==", "yk/8ZCjP66vVy8oQz50cxQofOWc="],

aleph-naught2tog

Generating the Sec-WebSocket-* headers

The functions included are for generating the base64-encode of a sha1 hash of the input string sent in as an argument.

About

This is the mechanism for processing something to be used as the header for either the Sec-WebSocket-Key request header or Sec-WebSocket-Accept response header in the websocket opening handshake.

To generate the Sec-WebSocket-Key, you would use generateRandomBase64String; for the matching Sec-WebSocket-Accept header value, you would use base64EncodeOfSha1Hash(keyConcatenatedWithMagicString).

aleph-naught2tog

#!/bin/bash

table_to_check_references_to='table_name'
database_name='dbname'

query=$(cat <<SQL
SELECT
    table_constraints.table_schema,
    table_constraints.constraint_name,
    table_constraints.table_name,

aleph-naught2tog

{
  "compilerOptions": {
    /* Basic Options */
    "target": "es5",                          
    "module": "commonjs",                     
    // "lib": [],                             
    // "allowJs": true,                       
    // "checkJs": true,                       
    // "jsx": "preserve",                     
    // "declaration": true,                   

aleph-naught2tog

{
  "keysAsKeyboard": [
    [
      "~ ! @ # $ % ^ & * ( ) _ +",
      "` 1 2 3 4 5 6 7 8 9 0 - ="
    ],
    [
      "Q W E R T Y U I O P { } |",
      "q w e r t y u i o p [ ] \\"
    ],

aleph-naught2tog

/* 
  Some languages, like Elixir, have sigils -- things that often look like a ~, a letter, and then some delimiters 
  with a string between them.
  
  One handy one is: `~w` -- in Elixir, you can look it up in the Kernel as `sigil_w`.
*/
// this is a one-liner of the function in the earlier file
const basicTag = (slots, ...values) => slots.map((slot, index) => [slot, values[index]].join('')).join('');

function w(pieces, ...values) {

aleph-naught2tog

class SuperClass {
  nonarrow() {
    console.log('nonarrow', 'superclass');
  }

  arrow = () => {
    console.log('arrow', 'superclass');
  }
}

aleph-naught2tog

const sortByKeysLegibly = maybeObject => {
  // presumably we want the array to stay ordered. Possibly not, but if there is
  // anything that should preserve order, it's an array
  if (maybeObject instanceof Array) {
    return maybeObject;
  }

  // don't sort strings etc
  if (typeof maybeObject !== 'object') {
    return maybeObject;