hvoecking

// Traverses an arbitrary struct and translates all stings it encounters
//
// I haven't seen an example for reflection traversing an arbitrary struct, so
// I want to share this with you. If you encounter any bugs or want to see
// another example please comment.
//
// The MIT License (MIT)
//
// Copyright (c) 2014 Heye Vöcking
//

arunoda

Installing SSHPASS

SSHPass is a tiny utility, which allows you to provide the ssh password without using the prompt. This will very helpful for scripting. SSHPass is not good to use in multi-user environment. If you use SSHPass on your development machine, it don't do anything evil.

Installing on Ubuntu

apt-get install sshpass

Installing on OS X

tylerneylon

-- Two dashes start a one-line comment.

--[[
     Adding two ['s and ]'s makes it a
     multi-line comment.
--]]

----------------------------------------------------
-- 1. Variables and flow control.
----------------------------------------------------

ashrithr

Introduction to Kafka

Kafka acts as a kind of write-ahead log (WAL) that records messages to a persistent store (disk) and allows subscribers to read and apply these changes to their own stores in a system appropriate time-frame.

Terminology:

• Producers send messages to brokers
• Consumers read messages from brokers
• Messages are sent to a topic

mendelgusmao

# based on http://uberblo.gs/2011/06/high-performance-url-shortening-with-redis-backed-nginx
# using code from http://stackoverflow.com/questions/3554315/lua-base-converter

# "database scheme"
# database 0: id ~> url
# database 1: id ~> hits
# database 2: id ~> [{referer|user_agent}]
# database 3: id ~> hits (when id is not found)
# database 4: id ~> [{referer|user_agent}] (when id is not found)
# database 5: key "count" storing the number of shortened urls; the id is generated by (this number + 1) converted to base 62

huljas

import org.junit.Test;
import java.util.Date;
import static org.junit.Assert.assertEquals;

public class StringFormatTest {

    @Test public void basicInteger() {
        assertEquals("123456", String.format("%d", 123456));
    }