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@alkavan
alkavan / gource-commands.txt
Created April 11, 2010 16:41
Gource and ffmpeg Commands
################################
gource commands
################################
# basic command for big and long projects
gource --max-user-speed 500 --seconds-per-day 0.05 --file-idle-time 10 -e 0.005 -f --max-files 300 --hide-files
# some easy to understand commands
# for output file
--output-ppm-stream ~/ppm/ppm-kohana
@christophermanning
christophermanning / README.md
Last active March 30, 2023 04:24
Voronoi Diagram with Force Directed Nodes and Delaunay Links

Created by Christopher Manning

Summary

Nodes are linked to nodes in neighboring cells. The cell's color is a function of its area.

The white lines are the Delaunay triangulation and the purple cells are the Voronoi diagram.

Controls

Setup remote git repo on EC2

Create a bare repository

$ mkdir <repo-name>.git
$ cd <repo-name>.git
$ git init --bare
@anantn
anantn / firebase_detect_data.js
Created December 18, 2012 00:54
Firebase: Detecting if data exists. This snippet detects if a user ID is already taken
function go() {
var userId = prompt('Username?', 'Guest');
checkIfUserExists(userId);
}
var USERS_LOCATION = 'https://SampleChat.firebaseIO-demo.com/users';
function userExistsCallback(userId, exists) {
if (exists) {
alert('user ' + userId + ' exists!');
@anantn
anantn / firebase_create.js
Last active November 20, 2023 23:17
Firebase: Creating data if it doesn't exist. This snippet creates a user only if it doesn't already exist.
function go() {
var userId = prompt('Username?', 'Guest');
var userData = { name: userId };
tryCreateUser(userId, userData);
}
var USERS_LOCATION = 'https://SampleChat.firebaseIO-demo.com/users';
function userCreated(userId, success) {
if (!success) {
@anantn
anantn / firebase_player_assignment.js
Last active January 14, 2023 01:51
Firebase: Assigning players in a multiplayer game. This snippet assigns you a spot in a game if the game isn't full yet.
function go() {
var userId = prompt('Username?', 'Guest');
// Consider adding '/<unique id>' if you have multiple games.
var gameRef = new Firebase(GAME_LOCATION);
assignPlayerNumberAndPlayGame(userId, gameRef);
};
// The maximum number of players. If there are already
// NUM_PLAYERS assigned, users won't be able to join the game.
var NUM_PLAYERS = 4;
@anantn
anantn / firebase_first_item.js
Last active March 4, 2016 00:04
Firebase: Get the first item in a list. This snippet retrieves only the first item in a list.
function makeList(ref) {
var fruits = ["banana", "apple", "grape", "orange"];
for (var i = 0; i < fruits.length; i++) {
ref.push(fruits[i]);
}
}
function getFirstFromList(ref, cb) {
ref.startAt().limit(1).once("child_added", function(snapshot) {
cb(snapshot.val());
@jed
jed / how-to-set-up-stress-free-ssl-on-os-x.md
Last active May 31, 2024 18:32
How to set up stress-free SSL on an OS X development machine

How to set up stress-free SSL on an OS X development machine

One of the best ways to reduce complexity (read: stress) in web development is to minimize the differences between your development and production environments. After being frustrated by attempts to unify the approach to SSL on my local machine and in production, I searched for a workflow that would make the protocol invisible to me between all environments.

Most workflows make the following compromises:

  • Use HTTPS in production but HTTP locally. This is annoying because it makes the environments inconsistent, and the protocol choices leak up into the stack. For example, your web application needs to understand the underlying protocol when using the secure flag for cookies. If you don't get this right, your HTTP development server won't be able to read the cookies it writes, or worse, your HTTPS production server could pass sensitive cookies over an insecure connection.

  • Use production SSL certificates locally. This is annoying

@katowulf
katowulf / 1_query_timestamp.js
Last active September 21, 2023 20:28
Get only new items from Firebase
// assumes you add a timestamp field to each record (see Firebase.ServerValue.TIMESTAMP)
// pros: fast and done server-side (less bandwidth, faster response), simple
// cons: a few bytes on each record for the timestamp
var ref = new Firebase(...);
ref.orderByChild('timestamp').startAt(Date.now()).on('child_added', function(snapshot) {
console.log('new record', snap.key());
});
@katowulf
katowulf / 1_using_queries.js
Last active April 24, 2023 07:14
Methods to search for user accounts by email address in Firebase
/***************************************************
* Simple and elegant, no code complexity
* Disadvantages: Requires warming all data into server memory (could take a long time for MBs of data or millions of records)
* (This disadvantage should go away as we add optimizations to the core product)
***************************************************/
var fb = firebase.database.ref();
/**
* @param {string} emailAddress