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@seabre
seabre / three.cljs
Last active September 13, 2021 06:19 — forked from michiakig/three.cljs
Three.js demo with ClojureScript. Actually works.
(ns three.demo)
(def THREE js/THREE)
(def camera (THREE.PerspectiveCamera. 75 (/ (.-innerWidth js/window)
(.-innerHeight js/window)) 1 10000))
(set! (.-z (.-position camera)) 1000)
(def scene (THREE.Scene.))
(def geometry (THREE.CubeGeometry. 200 200 200))
(def obj (js/Object.))
(set! (.-color obj) 0xff0000)
(set! (.-wireframe obj) true)
@grugq
grugq / gist:03167bed45e774551155
Last active April 6, 2024 10:12
operational pgp - draft

Operational PGP

This is a guide on how to email securely.

There are many guides on how to install and use PGP to encrypt email. This is not one of them. This is a guide on secure communication using email with PGP encryption. If you are not familiar with PGP, please read another guide first. If you are comfortable using PGP to encrypt and decrypt emails, this guide will raise your security to the next level.

@karpathy
karpathy / gist:587454dc0146a6ae21fc
Last active July 11, 2024 10:36
An efficient, batched LSTM.
"""
This is a batched LSTM forward and backward pass
"""
import numpy as np
import code
class LSTM:
@staticmethod
def init(input_size, hidden_size, fancy_forget_bias_init = 3):
@glamp
glamp / customer-segmentation.py
Last active April 30, 2020 13:40
Analysis for customer segmentation blog post
import pandas as pd
# http://blog.yhathq.com/static/misc/data/WineKMC.xlsx
df_offers = pd.read_excel("./WineKMC.xlsx", sheetname=0)
df_offers.columns = ["offer_id", "campaign", "varietal", "min_qty", "discount", "origin", "past_peak"]
df_offers.head()
df_transactions = pd.read_excel("./WineKMC.xlsx", sheetname=1)
df_transactions.columns = ["customer_name", "offer_id"]
df_transactions['n'] = 1
df_transactions.head()
@carlossless
carlossless / rssi-to-distance.py
Last active February 14, 2018 09:18
A python script to find three coefficients that best fit empyrical data for the d=A*(r/t)^B+C rssi to distance conversion formula
from scipy.optimize import leastsq
import matplotlib.pyplot as plt
import numpy as np
# d=A*(r/t)^B+C
d = [0.0,0.1,0.2,0.3,0.4,0.5,0.6,0.7,0.8,0.9,1.0,1.2,1.4,1.6,1.8,2.0,3.0,4.0,5.0,6.0,7.0,8.0,9.0,10.0,12.0,14.0,16.0,18.0,20.0,25]
r = [-20.64,-24.09,-27.55,-31.73,-35.27,-33.91,-31.36,-28.09,-32,-49.64,-52,-54.64,-55.18,-57.18,-58.64,-59.27,-72.55,-67.73,-66.65,-70,-68,-71,-74,-76,-83,-77,-83,-80,-80,-76]
t = -52.5
x = map(lambda r: r / t, r)
Benchmark results:
Date: 2016/03/20
Version: asgi_redis 0.8.3 / daphne master / channels master / cpython 2.7.11
Environment: AWS, 3x m3.large (1 daphne, 1 worker, 1 redis)
Source: 1x m3.medium, different AZ, ab for HTTP, channels benchmarker for WS
HTTP GET, Django View (concurrency 10, 10,000 total)
Failures: 0.0%
Rate: 160 req/s
@craigbeck
craigbeck / introspection-query.graphql
Created April 6, 2016 20:20
Introspection query for GraphQL
query IntrospectionQuery {
__schema {
queryType { name }
mutationType { name }
subscriptionType { name }
types {
...FullType
}
directives {
/**
* Base contract that all upgradeable contracts should use.
*
* Contracts implementing this interface are all called using delegatecall from
* a dispatcher. As a result, the _sizes and _dest variables are shared with the
* dispatcher contract, which allows the called contract to update these at will.
*
* _sizes is a map of function signatures to return value sizes. Due to EVM
* limitations, these need to be populated by the target contract, so the
* dispatcher knows how many bytes of data to return from called functions.
@karpathy
karpathy / pg-pong.py
Created May 30, 2016 22:50
Training a Neural Network ATARI Pong agent with Policy Gradients from raw pixels
""" Trains an agent with (stochastic) Policy Gradients on Pong. Uses OpenAI Gym. """
import numpy as np
import cPickle as pickle
import gym
# hyperparameters
H = 200 # number of hidden layer neurons
batch_size = 10 # every how many episodes to do a param update?
learning_rate = 1e-4
gamma = 0.99 # discount factor for reward
@odewahn
odewahn / error-handling-with-fetch.md
Last active June 9, 2024 14:27
Processing errors with Fetch API

I really liked @tjvantoll article Handling Failed HTTP Responses With fetch(). The one thing I found annoying with it, though, is that response.statusText always returns the generic error message associated with the error code. Most APIs, however, will generally return some kind of useful, more human friendly message in the body.

Here's a modification that will capture this message. The key is that rather than throwing an error, you just throw the response and then process it in the catch block to extract the message in the body:

fetch("/api/foo")
  .then( response => {
    if (!response.ok) { throw response }
    return response.json()  //we only get here if there is no error
 })