gabrieldewes’s gists

gabrieldewes / BinaryTree.js

Last active November 30, 2016 13:17

A Binary Search Tree implementation in JavaScript (iterative)

	/**
	* @description Implementação de uma árvore binária de busca em JavaScript.
	* @author Gabriel Dewes at 13 oct, 2016
	*/

	/**
	* @constructor
	*/
	function BinaryTree() {
	/**

gabrieldewes / BinaryTree.java

Created October 31, 2016 12:02

A Binary Tree implementation in Java (recursive with basic functions (insert, remove))

gabrieldewes / Hashify.js

Last active February 9, 2017 19:13

Simple Java Script object hashing

	/**
	* @description Simple hashing for JS objects
	* @author Gabriel Dewes at 9 nov, 2016
	*/
	Object.prototype.hashify = function(obj, len) {
	obj = obj \|\| this;
	len = len \|\| 2;
	var i, j, r=[];
	for (i=0; i<len; i++) {
	r.push(i*268803292);

gabrieldewes / uuid.js

Last active February 3, 2017 17:06

Simple and fast generation of RFC4122 UUIDs in Browser

	/* Simple and fast generation of RFC4122 UUIDS. */

	(function(root, factory) {
	'use strict';
	root.uuid = factory();
	})(window, function() {

	var byteToHex = [];
	for (var i=0; i<256; ++i) {
	byteToHex[i] = (i + 0x100).toString(16).substr(1);

gabrieldewes / objectId.js

Last active February 3, 2017 20:34

Quickly generate random unique strings

	/* It's of unspecified quality and not RFC4122.
	* Very slow due to string replaces
	*/
	var objectId = function () {
	var timestamp = (Date.now() / 1000 \| 0).toString(16);
	return timestamp + 'xxxxxxxxxxxxxxxx'.replace(/[x]/g, function() {
	return (Math.random() * 16 \| 0).toString(16);
	}).toLowerCase();
	};

gabrieldewes / br_states.json

Last active February 9, 2017 16:58

Todos estados do Brasil com código UF, nome, sigla, área em KM² e região, segundo IBGE.

gabrieldewes / data_to_table.js

Last active March 23, 2017 18:45

Simple snippet to generate HTML table for JSON or Array data.

	if ("undefined"===typeof jQuery) throw new Error("This function requires jQuery.");
	function table(element, data) {
	var g, a, b, r, i, e, l,
	s = Date.now();
	g = $("<table class='table table-responsive table-hover'/>").appendTo(element);
	a = $("<thead />").appendTo(g);
	/* Generates the table thead */
	r = data[0]; // Some element of any position, use the element with more atributtes
	for (i in r) {
	if (r.hasOwnProperty(i)) {

gabrieldewes / count_tables_and_sum_rows.sql

Created February 10, 2017 17:35

Get the number of tables and the total of rows of all tables in MySQL

	SELECT SUM(TABLE_ROWS) AS 'Total de Linhas', COUNT(*) AS 'Total de Tabelas'
	FROM INFORMATION_SCHEMA.TABLES
	WHERE TABLE_SCHEMA = 'databaseName';

gabrieldewes / toYyyymmddhhmmss.js

Created November 2, 2017 18:36

JS Date "yyyy-mm-dd hh:mm:ss" format

	(function() {
	"use strict";
	Date.prototype.toYyyymmddhhmmss = function() {
	var yyyy = this.getFullYear(),
	mm = this.getMonth() < 9 ? ("0" + (this.getMonth() + 1)) : (this.getMonth() + 1),
	dd = this.getDate() < 10 ? ("0" + this.getDate()) : this.getDate(),
	hh = this.getHours() < 10 ? ("0" + this.getHours()) : this.getHours(),
	min = this.getMinutes() < 10 ? ("0" + this.getMinutes()) : this.getMinutes(),
	ss = this.getSeconds() < 10 ? ("0" + this.getSeconds()) : this.getSeconds();
	return "".concat(yyyy).concat("-")

gabrieldewes / UploadResource.java

Created November 23, 2017 18:07

Uploading some binary file to http server

	import java.io.*;
	import java.net.HttpURLConnection;
	import java.net.URL;
	import java.net.URLConnection;
	import java.nio.file.Files;

	public class UploadResource {

	// Uploading some binary file to http server

Gabriel Dewes gabrieldewes