Michal Bernhard michalbcz

## delete_duplicated.groovy
/*
  Delete duplicated files

  Naive implementation which consider duplicated files as files with same file size in bytes.

  Note: this implementation delete *.jpg files but you can easily change it with another regexp. See line 17.
*/

import groovy.io.*

## slashy_string_ending_with_backslash_issue.groovy
/*
    Example what happened when you use backslash in Slashy string (https://groovy-lang.org/syntax.html#_slashy_string)

    Note: there is a note that you are not supposed to do that in https://groovy-lang.org/syntax.html#_special_cases
    "A consequence of slash escaping is that a slashy string can’t end with a backslash"
*/

import groovy.io.*

// def dir = new File(/C:\Users/) // WORKS (removed last slash)

## console_save.js
// inject this to your browser's developer tools console
(function(console){
console.save = function(data, filename){
    if(!data) {
        console.error('Console.save: No data')
        return;
    }
    if(!filename) filename = 'console.json'
    if(typeof data === "object"){
        data = JSON.stringify(data, undefined, 4)

## json-to-ndjson.md

      
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                michalbcz
                / json-to-ndjson.md
            
            
              Created
              March 27, 2021 13:08
                — forked from bzerangue/json-to-ndjson.md
            
              
                JSON to NDJSON 
              
          
    NDJSON is a convenient format for storing or streaming structured data that may be processed one record at a time.

Each line is a valid JSON value
Line separator is ‘\n’

1. Convert JSON to NDJSON?

cat test.json | jq -c '.[]' > testNDJSON.json


## decimal_to_hex_puzzler.groovy
/* THIS PUZZLER IS SOVLED, SEE REVISION OF THIS GIST TO SEE ORIGINAL PROBLEM */

decimalValue = 9989
hexValue = toHex(code)
assert hexValue == '2705'

// safe net
expectedValue = Integer.toHexString(decimalValue)
assert hexValue == expectedValue : "Your impl should work as expected. Result should be: ${expectedValue}"

## vanilla-js-jquery-like-examples.js
// JSON
  const data = await (await fetch('/my-url')).json();

  // Post
  await fetch('/my-url', { method: 'POST', body: data });

  // Request
  try {
    const resp = await fetch('/my-url');
    // ...

## gist:f8e7fcdc2fe17605d3966f17956c40c0

// methods
private static SSLSocketFactory createSslSocketFactory(X509TrustManager trustManager) {
    try {
        final SSLContext context = SSLContext.getInstance("TLS");
        context.init(null, new TrustManager[]{trustManager}, new SecureRandom());
        return context.getSocketFactory();
    } catch (NoSuchAlgorithmException | KeyManagementException e) {
        return ExceptionUtils.rethrow(e);
    }

## gist:334d7c6585850752d3640c4ef407fc22
{ echo -e "GET / HTTP/1.0\r\nHost: ftp.gnu.org\r\n\r" >&3; cat <&3 ; } 3<> /dev/tcp/ftp.gnu.org/80

## zbranekvalitne-questing-including-groups-scraper.js
const puppeteer = require('puppeteer')
const fs = require('fs')

// this wrapper means immediatelly execute this code
void(async () => {
    const url = 'https://zbranekvalitne.cz/zbrojni-prukaz/testove-otazky'

    try {
        console.log("I am scraping questions from " + url)
        const browser = await puppeteer.launch({

## zbranekvalitne-scraper.js
const puppeteer = require('puppeteer')
const fs = require('fs')

// this wrapper means immediatelly execute this code
void(async () => {
    const url = 'https://zbranekvalitne.cz/zbrojni-prukaz/testove-otazky'

    try {
        console.log("I am scraping questions from " + url)
        const browser = await puppeteer.launch({
	/*
	Delete duplicated files

	Naive implementation which consider duplicated files as files with same file size in bytes.

	Note: this implementation delete *.jpg files but you can easily change it with another regexp. See line 17.
	*/

	import groovy.io.*
	/*
	Example what happened when you use backslash in Slashy string (https://groovy-lang.org/syntax.html#_slashy_string)

	Note: there is a note that you are not supposed to do that in https://groovy-lang.org/syntax.html#_special_cases
	"A consequence of slash escaping is that a slashy string can’t end with a backslash"
	*/

	import groovy.io.*

	// def dir = new File(/C:\Users/) // WORKS (removed last slash)
	// inject this to your browser's developer tools console
	(function(console){
	console.save = function(data, filename){
	if(!data) {
	console.error('Console.save: No data')
	return;
	}
	if(!filename) filename = 'console.json'
	if(typeof data === "object"){
	data = JSON.stringify(data, undefined, 4)
	/* THIS PUZZLER IS SOVLED, SEE REVISION OF THIS GIST TO SEE ORIGINAL PROBLEM */

	decimalValue = 9989
	hexValue = toHex(code)
	assert hexValue == '2705'

	// safe net
	expectedValue = Integer.toHexString(decimalValue)
	assert hexValue == expectedValue : "Your impl should work as expected. Result should be: ${expectedValue}"
	// JSON
	const data = await (await fetch('/my-url')).json();

	// Post
	await fetch('/my-url', { method: 'POST', body: data });

	// Request
	try {
	const resp = await fetch('/my-url');
	// ...

	// methods
	private static SSLSocketFactory createSslSocketFactory(X509TrustManager trustManager) {
	try {
	final SSLContext context = SSLContext.getInstance("TLS");
	context.init(null, new TrustManager[]{trustManager}, new SecureRandom());
	return context.getSocketFactory();
	} catch (NoSuchAlgorithmException \| KeyManagementException e) {
	return ExceptionUtils.rethrow(e);
	}
	const puppeteer = require('puppeteer')
	const fs = require('fs')

	// this wrapper means immediatelly execute this code
	void(async () => {
	const url = 'https://zbranekvalitne.cz/zbrojni-prukaz/testove-otazky'

	try {
	console.log("I am scraping questions from " + url)
	const browser = await puppeteer.launch({