TheLinx

-- this goes in your LUA_PATH, which you can find out by running:
-- lua -e 'print(package.path:sub(22,package.path:sub(22):find("%?%.lua")+20))'
-- first, require("printr")
-- then, use the function printr()
-- this code is public domain

local stringFormat,stringRep,stringChar = string.format,string.rep,string.char
local tableInsert,tableConcat = table.insert,table.concat

local function serializevalue(v, d, n)

Yonaba

-- RLE Encryption Algorithm Implementation
-- Used for data compression

-- Assuming original file is 'test.txt'
local file = io.open("test.txt","rb")
local Ssize = file:seek("end")
file:seek("set",0)

--RLEncodes a single string
function encode(std,flag)

silentbicycle

-- Generate a random array of bytes, with some redundancy (via sorting).
function gen_int_array(limit)
    limit = limit or 10000
    local ri = lunatest.random_int
    local length = ri(1, limit)
    local ints = {}
    for i=1,length do
        -- keep them small, to increase duplication
        ints[i] = ri(0, 2^8 - 1)
    end

silentbicycle

-- Use literal zero for escape before compression data
local esc = 0

-- Run-length-encode an array of ints.
function encode(ints)
    local res, i, ct = {}, 1, 1  -- result, index, count
    while i <= #ints do
        local v = ints[i]
        while ints[i+1] == v do
            ct = ct + 1

Elemecca

function hex_dump (str)
    local len = string.len( str )
    local dump = ""
    local hex = ""
    local asc = ""
    
    for i = 1, len do
        if 1 == i % 8 then
            dump = dump .. hex .. asc .. "\n"
            hex = string.format( "%04x: ", i - 1 )

veproza

Getting u-blox MAX-7C GPS to work with Assisted A-GPS

So you got your u-blox GPS and wired it up only to look at it struggling to get a valid fix? Under less than ideal conditions, it can take a better part of half an hour. That's because unlike your smartphone GPS, it doesn't have the luxury of having downloaded all the auxiliary navigation data (almanacs and the lot) out-of-band, via fast mobile connection. Instead it relies on the satellite's signal itself, which is being transmitted to you at meager 50 bits per second (I'm not missing "kilo" there, it's three orders of magnitude slower than your 2G GPRS connection).

Luckily, the u-blox receivers are fitted with what the company calls "AssistNow" capability and it does exactly the same thing your iPhone does - feeds the GPS with pre-downloaded almanacs, speeding up the acquisition process to mere seconds.

In principle, the process looks easy enough - we just need to download the data, and then push them to the receiver. Sadly, the AssistNow documentat

Maxs1789

-- Print a prompt an read an input line
local function getline(line)

  if line ~= "" then
    io.write(">> ")
    return line .. "\n" .. io.read()
  end

  io.write("> ")

Elmuti

--[[
	From a high-level perspective, NPCs follow a fairly simple (and real-world logical) process for making decisions. 
	The easiest way to understand it is to examine the basic outline first, and then dig further into the necessary exceptions afterwards.
	Each time an NPC thinks, it follows this routine:
	
		- Perform Sensing -
		
			NPC Sensing generates a list of entities that it can see, 
			and another list of NPC sounds that it can hear. 
			The NPC ignores entities and sounds that it doesn't care about.

peterneubauer

license: CC-0

jgamblin

sudo apt-get update
sudo apt-get install lua5.1 alsa-utils triggerhappy curl libcurl3
wget http://archive.raspberrypi.org/debian/pool/main/r/raspi-config/raspi-config_20160322_all.deb
wget http://archive.raspberrypi.org/debian/pool/main/r/rpi-update/rpi-update_20140705_all.deb
dpkg -i raspi-config_20160322_all.deb
dpkg -i rpi-update_20140705_all.deb