keyvanakbary’s gists

keyvanakbary / title-case.sql

Created October 29, 2017 12:39

	DROP FUNCTION IF EXISTS lowerword;
	DELIMITER \|
	CREATE FUNCTION lowerword( str VARCHAR(128), word VARCHAR(5) )
	RETURNS VARCHAR(128)
	DETERMINISTIC
	BEGIN
	DECLARE i INT DEFAULT 1;
	DECLARE loc INT;

	SET loc = LOCATE(CONCAT(word,' '), str, 2);

keyvanakbary / bst-traverse-tree.java

Created February 23, 2017 22:40

	public class Solution {
	public void traverse(TreeNode root) {
	Queue<TreeNode> nodes = new ArrayList();
	nodes.add(root);
	while (!nodes.isEmpty()) {
	TreeNode node = nodes.remove();

	System.out.println(node.val);

	if (node.left != null) queue.add(node.left);

keyvanakbary / cons.js

Last active June 16, 2016 15:24

	const cons = (x, y) => (m) => m(x, y);
	const car = (z) => z((p, q) => p);
	const cdr = (z) => z((p, q) => q);

	const pair = cons(1, 2);
	console.log(car(pair), cdr(pair));//1 2

	const list = cons(1, cons(2, cons(3, cons(4, null))));
	const each = (l, fn) => cdr(l) ? (() => {fn(car(l)); each(cdr(l), fn)})() : fn(car(l));
	each(list, console.log);//1 2 3 4

keyvanakbary / stateful-accumulator.clj

Created March 13, 2016 20:57

Stateful Accumulator

keyvanakbary / object.scm

Created March 13, 2016 20:36

Modelling objects

	(define (create-user name)
	(define say-hello
	(print "Hello " name))
	(define (change-name new-name)
	(set! name new-name)
	name)
	(define (dispatch method)
	(cond
	((eq? method 'say-hello) say-hello)
	((eq? method 'change-name) change-name)

keyvanakbary / readme-php7.md

Created January 20, 2016 13:24 — forked from denji/readme-php7.md

Compile PHP 7.0 (Release Candidate) on Mac OSX with homebrew https://wiki.php.net/phpng | https://www.jverdeyen.be/php/phpng-on-ubuntu-trusty/ | http://talks.php.net/froscon15#/phpconf1

$ brew install autoconf automake gmp homebrew/versions/bison27 gd freetype t1lib gettext zlib mcrypt

$ git clone --depth=1 https://github.com/php/php-src.git

$ cd php-src

keyvanakbary / let-syntactic-sugar.clj

Created January 12, 2016 14:41

Let is just a syntax sugar over lambdas

keyvanakbary / linear-recursion-iteration.scm

Created January 3, 2016 16:09

keyvanakbary / StreamHttpClient.php

Created March 6, 2015 07:39

Simple HTTP client for GET and POST methods

	<?php

	class StreamHttpClient implements HttpClient
	{
	public function request($url, $method, array $parameters = [])
	{
	$content = http_build_query($parameters);

	$options = ['method' => $method];

keyvanakbary / pi.clj

Last active August 29, 2015 14:14

Nilakantha's series for calculating π

Keyvan Akbary keyvanakbary