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@ih2502mk
ih2502mk / list.md
Last active March 26, 2024 16:47
Quantopian Lectures Saved
with
dau as (
-- This part of the query can be pretty much anything.
-- The only requirement is that it have three columns:
-- dt, user_id, inc_amt
-- Where dt is a date and user_id is some unique identifier for a user.
-- Each dt-user_id pair should be unique in this table.
-- inc_amt represents the amount of value that this user created on dt.
-- The most common case is
-- inc_amt = incremental revenue from the user on dt
@import "compass/css3/shared";
// September 2012 Candidate Recommendation (http://www.w3.org/TR/2012/CR-css3-flexbox-20120918/)
// Chrome 21 (prefixed)
// Opera 12.1 (unprefixed)
// Firefox 20 (unprefixed)
$flex-moz: false !default;
$flex-webkit: true !default;
$flex-o: false !default;
$flex-ms: false !default;
@bbrelje
bbrelje / tank_opt.py
Created December 2, 2020 23:24
Carbon fiber H2 tank optimization problem
import numpy as np
from matplotlib import pyplot as plt
import openmdao.api as om
def rotations(theta):
# define rotation matrices per http://web.mit.edu/course/3/3.11/www/modules/laminates.pdf
s = np.sin(theta)
c = np.cos(theta)
# stress in fiber axis = A * stress in xy axis
@tkafka
tkafka / LICENSE.txt
Last active September 5, 2019 13:38
Drop-in replacement for ReactCSSTransitionGroup that uses velocity.js instead of CSS transforms. Add your own transitions to `transitions` hash.
The MIT License (MIT)
Copyright (c) 2014 Tomas Kafka
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
@SchumacherFM
SchumacherFM / Magento-HHVM.md
Last active May 17, 2018 18:26
Running Magento Enterprise Edition with Facebook HipHop HHVM

Running Magento Enterprise Edition with Facebook HipHop HHVM

Prerequisites

Hardware

MacBook Air (MBA) Mid 2012

@imkevinxu
imkevinxu / vidtogif.sh
Last active June 17, 2016 17:35
Convert an animated video to gif from http://chrismessina.me/b/13913393/mov-to-gif
# Convert an animated video to gif
# Works best for videos with low color palettes like Dribbble shots
#
# @param $1 - video file name like `animation.mov`
# @param @optional $2 - resize parameter as widthxheight like `400x300`
#
# Example: vidtogif animation.mov 400x300
# Requirements: ffmpeg and gifsicle. Can be downloaded via homebrew
#
# http://chrismessina.me/b/13913393/mov-to-gif
@spacenick
spacenick / gist:5397435
Last active December 16, 2015 07:18
Adding item to a relation on Parse
// You can do that in your Chrome Console
// Load the initial object, like an Attempt
var attempt = new Parse.Object("Attempt");
attempt.id = "myId";
attempt.fetch();
// Get the relation "handler" from the attempt object
var relation = attempt.relation("products");
@leesbian
leesbian / gist:1854374
Created February 17, 2012 17:02
Remove quotes that belong to anonymous users with expired cookies (because they'll never be able to retrieve them)
/**
* Clean expired quotes (cron process)
*
* @param Mage_Cron_Model_Schedule $schedule
* @return Mage_Sales_Model_Observer
*/
public function cleanExpiredQuotes($schedule)
{
Mage::dispatchEvent('clear_expired_quotes_before', array('sales_observer' => $this));