SkamDart

Latency Comparison Numbers (~2012)
----------------------------------
L1 cache reference                           0.5 ns
Branch mispredict                            5   ns
L2 cache reference                           7   ns                      14x L1 cache
Mutex lock/unlock                           25   ns
Main memory reference                      100   ns                      20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy             3,000   ns        3 us
Send 1K bytes over 1 Gbps network       10,000   ns       10 us
Read 4K randomly from SSD*             150,000   ns      150 us          ~1GB/sec SSD

SkamDart

package main

import (
	"fmt"
	"log"
	"sync"
	"time"
)

type Item struct {

SkamDart

"""Small example of message passing using concurrent.futures.ThreadPoolExecutor"""
import logging
from concurrent.futures import ThreadPoolExecutor
from queue import (
    Empty as ThreadSafeQueueEmpty,
    Queue as ThreadSafeQueue
)
from time import sleep

logging.basicConfig(level=logging.INFO)

SkamDart

# apt install netcat
REDIS_HOST='localhost'
REDIS_PORT=6379
echo PING | nc $REDIS_HOST $REDIS_PORT

SkamDart

"""Example usage for cprofile

pip install gprof2dot
"""
import cProfile
import pstats
import StringIO

pr = cProfile.Profile()

SkamDart

#!/bin/bash

# source: http://www.haskell.org/pipermail/haskell-cafe/2011-March/090170.html

sudo rm -rf /Library/Frameworks/GHC.framework
sudo rm -rf /Library/Frameworks/HaskellPlatform.framework
sudo rm -rf /Library/Haskell
rm -rf .cabal
rm -rf .ghc
rm -rf ~/Library/Haskell

SkamDart

#!/usr/bin/env python3

import json
import pdb
import sys

def main():
  filename = argv[0]
  key = argv[1]
  

SkamDart

/*This is the sample program to notify us for the file creation and file deletion takes place in “/tmp” directory*/
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <sys/types.h>
#include <linux/inotify.h>

#define EVENT_SIZE  ( sizeof (struct inotify_event) )
#define EVENT_BUF_LEN     ( 1024 * ( EVENT_SIZE + 16 ) )

SkamDart

nix flake show --json | jq '[leaf_paths as $path | select(getpath($path) == "derivation") | {"key": $path | join(".") | sub(".type";""), "value": getpath($path)}] | from_entries | keys|.[]' -cr | xargs -I{} nix build .#{}

SkamDart

    binaryCaches = [
      "https://hydra.iohk.io"
      "https://cache.nixos.org/"
    ];

    binaryCachePublicKeys = [
      "hydra.iohk.io:f/Ea+s+dFdN+3Y/G+FDgSq+a5NEWhJGzdjvKNGv0/EQ="
      "cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDShjY="
    ];