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// swiftc detect.swift -o detect

import Cocoa

func detectDarkTheme() {
	let isDark = UserDefaults.standard.string(forKey: "AppleInterfaceStyle") == "Dark"
	
	if isDark {
	 print("Mode is Dark")
	} else {

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import boto3
import pprint
from collections import defaultdict

ec2 = boto3.client('ec2')

resp = ec2.describe_instances()

running_instances = defaultdict (lambda:0)
running_instances_apps = defaultdict(set)

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// Reference:  This list was adapted from the table located here:
//     http://www.phy.mtu.edu/~suits/notefreqs.html
const float  note_C0 = 16.35;  //C0
const float  note_Db0 = 17.32;  //C#0/Db0
const float  note_D0 = 18.35;  //D0
const float  note_Eb0 = 19.45;  //D#0/Eb0
const float  note_E0 = 20.6;  //E0
const float  note_F0 = 21.83;  //F0
const float  note_Gb0 = 23.12;  //F#0/Gb0
const float  note_G0 = 24.5;  //G0

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EDIT: go to https://golang.org/, skip the rest of this doc.

Quick Tips for Fast Code on the JVM

I was talking to a coworker recently about general techniques that almost always form the core of any effort to write very fast, down-to-the-metal hot path code on the JVM, and they pointed out that there really isn't a particularly good place to go for this information. It occurred to me that, really, I had more or less picked up all of it by word of mouth and experience, and there just aren't any good reference sources on the topic. So… here's my word of mouth.

This is by no means a comprehensive gist. It's also important to understand that the techniques that I outline in here are not 100% absolute either. Performance on the JVM is an incredibly complicated subject, and while there are rules that almost always hold true, the "almost" remains very salient. Also, for many or even most applications, there will be other techniques that I'm not mentioning which will have a greater impact. JMH, Java Fligh

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from boto3.session import Session
from botocore.client import Config
from botocore.handlers import set_list_objects_encoding_type_url

import boto3

ACCESS_KEY = "xx"
SECRET_KEY = "yy"
boto3.set_stream_logger('')

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Using Locust.io with Grafana

On your locust master server:

• Install and configure Graphite. Follow a good tutorial
• Install and configure Grafana: tutorial

Use logra.py on your locust test file. See locustfile.py.

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Contents

• Why care about Rust?
• The Toolchain
• Creating a New Project
• Modules
• Crates
• Types
• References
• Mutability

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import xmltodict
import json
import sys
import getopt
import time
from datetime import datetime
import collections
from elasticsearch import Elasticsearch
import logging
from kafka import KafkaProducer

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Internet Scale Services Checklist

A checklist for designing and developing internet scale services, inspired by James Hamilton's 2007 paper "On Desgining and Deploying Internet-Scale Services."

• http://mvdirona.com/jrh/talksandpapers/jamesrh_lisa.pdf

Basic tenets

• Does the design expect failures to happen regularly and handle them gracefully?
• Have we kept things as simple as possible?

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import re
import boto3
import csv
from botocore.exceptions import ClientError

ec2 = boto3.client('ec2')

def get_snapshots():
    return ec2.describe_snapshots(OwnerIds=['self'])['Snapshots']