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William Vargas wdiasvargas

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@wdiasvargas
wdiasvargas / setting-up-babel-nodemon.js
Created April 23, 2018 20:34
npm i --save-dev babel-cli babel-preset-env nodemon && echo { "presets": ["env"] } > .babelrc
@wdiasvargas
wdiasvargas / 1.1.js
Last active April 23, 2018 02:16
var str = "isso é uma string";
typeof(str);//'string'
var num = 1.74;
typeof(num);//'number'
var bol = true;
typeof(bol);//'boolean'
var und; //undefined
@wdiasvargas
wdiasvargas / 1.1_literal.js
Last active April 23, 2018 02:00
var str = "isso é uma string";
typeof(str);//'string'
var num = 1.74;
typeof(num);//'number'
var bol = true;
typeof(bol);//'boolean'
@wdiasvargas
wdiasvargas / index-test
Created August 24, 2017 18:17
<!doctype html>
<title>Site Maintenance</title>
<style>
body { text-align: center; padding: 150px; }
h1 { font-size: 50px; }
body { font: 20px Helvetica, sans-serif; color: #333; }
article { display: block; text-align: left; width: 650px; margin: 0 auto; }
a { color: #dc8100; text-decoration: none; }
a:hover { color: #333; text-decoration: none; }
</style>
@wdiasvargas
wdiasvargas / higher-order-functions.js
Last active July 4, 2017 21:52
const soma = (x, y) => x + y;
const calcular = (fn, x, y) => fn(x, y);
calcular(sum, 1, 2);
@wdiasvargas
wdiasvargas / babel-setup-es2017
Created June 22, 2017 06:04
npm install --save-dev babel-cli babel-preset-es2017 && echo '{ "presets": ["es2017"] }' > .babelrc && echo 'function a(b,) { console.log("hi"); }; a()' > index.js
//run ./node_modules/.bin/babel-node index.js
//params $babel$ $script.js$ --presets es2017
@wdiasvargas
wdiasvargas / y-combinator-factorial.es6
Created June 21, 2017 07:22
/**
* Created in 21/06/2017.
* Author: William Dias Vargas
* Github: @wdiasvargas
*/
'use strict';
import yCombFact from './y-combinator-factorial'
export default (number) => ((fn) => fn(fn, number))((f, n) => (n <= 1)? 1: n * f(f, (n - 1)))
console.info(yCombFact(5))
@wdiasvargas
wdiasvargas / y-combinator.es6
Last active October 19, 2018 03:11
/**
* Created in 21/06/2017.
* Author: William Dias Vargas
* Github: @wdiasvargas
*/
'use strict';
//http://kestas.kuliukas.com/YCombinatorExplained/
() => (f) => f(f)((f) =>((x) => (f(f))(x))))
@wdiasvargas
wdiasvargas / memoization.es6
Created June 21, 2017 05:06
/**
* Created in 20/06/2017.
* Author: William Dias Vargas
* Github: @wdiasvargas
*/
"use strict";
export default (fn, cache = {}) => (x) => (x in cache) ? cache[x] : cache[x] = fn(x);
@wdiasvargas
wdiasvargas / memoization.es6
Created June 21, 2017 05:04
memoization
/**
* Created in 20/06/2017.
* Author: William Dias Vargas
* Github: @wdiasvargas
*/
"use strict";
export default (fn, cache = {}) => (x) => (x in cache) ? cache[x] : cache[x] = fn(x);