tbarbugli

%matplotlib inline
import scipy as sp
import numpy as np
import matplotlib.pylab as plt

def error(f, x, y):
    return sp.sum((f(x) - y)**2)

x = np.linspace(-np.pi, 1+np.pi, 201)
plt.plot(x, np.sin(x))

tbarbugli

{{ object }}_{{ time.strftime("%Y-%m-%d") }}_{{ time.strftime('%H')|int // 2 }}

tbarbugli

from stream_django.activity import create_reference

user_feed = feed_manager.get_user_feed(user.id)

activity = {
  'actor': create_reference(user),
  'verb': 'like',
  'object': create_reference(liked_item),
  'foreign_id': create_reference(liked_item)
 }

tbarbugli

from celery.app import app_or_default

app = app_or_default()
connection = app.connection()
queue = connection.SimpleQueue('queue')

tbarbugli

from stream_django import feed_manager

Rating.__bases__ = (Activity,) + Rating.__bases__
feed_manager.bind_model(Rating)

tbarbugli

<?php
// Get curl version array
$version = curl_version();

// These are the bitfields that can be used
// to check for features in the curl build
$bitfields = Array(
            'CURL_VERSION_IPV6',
            'CURL_VERSION_KERBEROS4',
            'CURL_VERSION_SSL',

tbarbugli

<?php
$c = curl_init('https://us-east-api.getstream.io');
// force curl to try IPv4 first
curl_setopt($c, CURLOPT_IPRESOLVE, CURL_IPRESOLVE_V4); 
curl_exec($c);
echo curl_getinfo($c, CURLINFO_NAMELOOKUP_TIME);
?>

tbarbugli

Configure an instance for your project
--------------------------------------
```js
var client = new StreamAnalytics({
  projectId: "YOUR_PROJECT_ID",
  writeKey: "YOUR_WRITE_KEY"
});
```

User centered metrics

tbarbugli

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>io.stream.example</groupId>
    <artifactId>example</artifactId>
    <version>1.0-SNAPSHOT</version>
    <dependencyManagement>

tbarbugli

// Configure an instance for your project
var client = new StreamAnalytics({
  projectId: "YOUR_PROJECT_ID",
  writeKey: "YOUR_WRITE_KEY"
});

// Track impressions (eg. messages in the http://stocktwits.com/symbol/ING page)
// Every activity (eg. messages) shown to the user should be tracked as an impression
var impression = {
    viewerId: 'user:Thierry',