fumiyas

#!/bin/sh

set -u
set -e
umask 0077

prefix="/opt/openssh"
top="$(pwd)"
root="$top/root"
build="$top/build"

f0k

#!/usr/bin/env python
# -*- coding: utf-8 -*-

"""
Outputs some information on CUDA-enabled devices on your computer,
including current memory usage.

It's a port of https://gist.github.com/f0k/0d6431e3faa60bffc788f8b4daa029b1
from C to Python with ctypes, so it can run without compiling anything. Note
that this is a direct translation with no attempt to make the code Pythonic.

cherti

#!/bin/bash

name=$RANDOM
url='http://localhost:9093/api/v1/alerts'

echo "firing up alert $name" 

# change url o
curl -XPOST $url -d "[{ 
	\"status\": \"firing\",

vasanthk

System Design Cheatsheet

Picking the right architecture = Picking the right battles + Managing trade-offs

Basic Steps

1. Clarify and agree on the scope of the system

• User cases (description of sequences of events that, taken together, lead to a system doing something useful)
  • Who is going to use it?
  • How are they going to use it?

aidanhs

PLEASE DON'T USE THIS GUIDE

It's over 9 years old (as of 2024-02-18), there are many better guides! You might like https://rust-unofficial.github.io/too-many-lists/

% Let's build a binary tree!

Let's build a binary tree of strings in Rust. To recap, each node in a binary tree:

1. must have a value

lwr

#!/bin/bash

GFWLIST=https://autoproxy-gfwlist.googlecode.com/svn/trunk/gfwlist.txt
PROXY=127.0.0.1:7070

cd `dirname "${BASH_SOURCE[0]}"`
echo "Downloading gfwlist from $GFWLIST"
curl "$GFWLIST" --socks5-hostname "$PROXY" > /tmp/gfwlist.txt
/usr/local/bin/gfwlist2pac \
    --input /tmp/gfwlist.txt \

kachayev

# Simple:
# a --> b
#   --> c --> d
#   --> d 
graph1 = {
    "a": ["b", "c", "d"],
    "b": [],
    "c": ["d"],
    "d": []
}

Mortimerp9

/**
 * A monad to abstract dependencies in the code, see https://coderwall.com/p/kh_z5g
 */
object Reader {

  /**
   * an implicit to convert a function A => B in a Reader[A, B]
   */
  implicit def reader[C, R](block: C => R): Reader[C, R] = Reader(block)

mridgers

//------------------------------------------------------------------------------
// pdbdump.c - dump symbols from .pdb and executable files (public domain).
//           - to compile; cl.exe /Ox /Zi pdbdump.c
//           -
//           - Martin Ridgers, pdbdump 'at' fireproofgravy.co.uk
//------------------------------------------------------------------------------

#include <stdio.h>
#include <Windows.h>
#include <DbgHelp.h>

jboner

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