Skip to content

Instantly share code, notes, and snippets.

View drawcode's full-sized avatar
😎
Shipping product

Ryan Christensen drawcode

😎
Shipping product
View GitHub Profile
@aozturk
aozturk / HashMap.h
Last active April 2, 2022 00:47
Basic Hash Map (Hash Table) implementation in C++
// Hash map class template
template <typename K, typename V, typename F = KeyHash<K>>
class HashMap {
public:
HashMap() {
// construct zero initialized hash table of size
table = new HashNode<K, V> *[TABLE_SIZE]();
}
~HashMap() {
@misaelnieto
misaelnieto / live-mjpeg-stream.py
Last active July 18, 2025 18:46
Streaming MJPEG over HTTP with gstreamr and python - WSGI version
#!/usr/bin/python
#based on the ideas from http://synack.me/blog/implementing-http-live-streaming
# Updates:
# - 2024-04-24: Apply suggestions from @Pin80
# Run this script and then launch the following pipeline:
# gst-launch videotestsrc pattern=ball ! video/x-raw-rgb, framerate=15/1, width=640, height=480 ! jpegenc ! multipartmux boundary=spionisto ! tcpclientsink port=9999
#updated command line
#gst-launch-1.0 videotestsrc pattern=ball ! videoconvert ! video/x-raw, framerate=15/1, width=640, height=480 ! jpegenc ! multipartmux boundary=spionisto ! #tcpclientsink port=9999
from multiprocessing import Queue
@amscotti
amscotti / md5.coffee
Last active January 18, 2021 12:54
MD5 hashing
crypto = require('crypto');
#Quick MD5 of text
text = "MD5 this text!"
md5hash1 = crypto.createHash('md5').update(text).digest("hex")
#MD5 of text with updates
m = crypto.createHash('md5')
m.update("MD5 ")
m.update("this ")
@kmorcinek
kmorcinek / .gitignore
Last active October 7, 2025 20:05
.gitignore for C# projects
# The following command works for downloading when using Git for Windows:
# curl -LOf http://gist.githubusercontent.com/kmorcinek/2710267/raw/.gitignore
#
# Download this file using PowerShell v3 under Windows with the following comand:
# Invoke-WebRequest https://gist.githubusercontent.com/kmorcinek/2710267/raw/ -OutFile .gitignore
#
# or wget:
# wget --no-check-certificate http://gist.githubusercontent.com/kmorcinek/2710267/raw/.gitignore
# User-specific files
@jboner
jboner / latency.txt
Last active November 9, 2025 07:03
Latency Numbers Every Programmer Should Know
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
@hellerbarde
hellerbarde / latency.markdown
Created May 31, 2012 13:16 — forked from jboner/latency.txt
Latency numbers every programmer should know

Latency numbers every programmer should know

L1 cache reference ......................... 0.5 ns
Branch mispredict ............................ 5 ns
L2 cache reference ........................... 7 ns
Mutex lock/unlock ........................... 25 ns
Main memory reference ...................... 100 ns             
Compress 1K bytes with Zippy ............. 3,000 ns  =   3 µs
Send 2K bytes over 1 Gbps network ....... 20,000 ns  =  20 µs
SSD random read ........................ 150,000 ns  = 150 µs

Read 1 MB sequentially from memory ..... 250,000 ns = 250 µs

@robcolburn
robcolburn / custom-tweetbox.html
Created May 31, 2012 16:51
How to make custom tweetboxes
<div>
<h1>Tweetbox</h1>
<form id="my-tweetbox">
<p><textarea name="tweet">Write your tweet...</textarea></p>
<p><input type="submit" name="submit" value="Tweet!" /></p>
</form>
</div>
<div>
<h1>County Tweetbox</h1>
@davybrion
davybrion / s1.xml
Created September 15, 2012 17:08
code snippet for "Hosting a Node.js site through Apache" post
<VirtualHost 109.74.199.47:80>
ServerAdmin [email protected]
ServerName thatextramile.be
ServerAlias www.thatextramile.be
ProxyRequests off
<Proxy *>
Order deny,allow
Allow from all
@philfreo
philfreo / bucket_policy.js
Created October 6, 2012 01:27
AWS S3 bucket policy to make all files public (+CORS)
{
"Statement": [
{
"Sid": "AllowPublicRead",
"Effect": "Allow",
"Principal": {
"AWS": "*"
},
"Action": "s3:GetObject",
"Resource": "arn:aws:s3:::bucket_name_here/*"
@1wErt3r
1wErt3r / SMBDIS.ASM
Created November 9, 2012 22:27
A Comprehensive Super Mario Bros. Disassembly
;SMBDIS.ASM - A COMPREHENSIVE SUPER MARIO BROS. DISASSEMBLY
;by doppelganger ([email protected])
;This file is provided for your own use as-is. It will require the character rom data
;and an iNES file header to get it to work.
;There are so many people I have to thank for this, that taking all the credit for
;myself would be an unforgivable act of arrogance. Without their help this would
;probably not be possible. So I thank all the peeps in the nesdev scene whose insight into
;the 6502 and the NES helped me learn how it works (you guys know who you are, there's no