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@kiyoto
kiyoto / collatz.markdown
Created May 1, 2016 09:10
The Collatz Conjecture in PostgreSQL

##QUERY (PostgreSQL 9.4)

WITH RECURSIVE t(n) AS (
  VALUES(1337)
  UNION ALL
  SELECT CASE WHEN n%2=0 THEN n/2 ELSE 3*n+1 END FROM t WHERE n > 1)
SELECT * FROM t
@mariojunior
mariojunior / gist:6175849
Created August 7, 2013 16:47
AngularJS Learned Lessons #2: Enabling HTTP Credentials (needed by Session IDs)
//On config definition...
angular.module("moduleName").config(
function ($routeProvider, $httpProvider) {
//HERE THE IMPORTANT MAGIC LINE!
$httpProvider.defaults.withCredentials = true;
//If you don't set the line above, all $http will dispatch request without session_id to backend
//and the backend will not reconize the user session, giving your a big head pain! Believe on me.
//Question & Answer: http://stackoverflow.com/questions/17064791/http-doesnt-send-cookie-in-requests