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@zollinger
zollinger / getcolor.py
Last active March 11, 2023 15:57
Simple way to get dominant colors from an image in Python
from PIL import Image, ImageDraw
import argparse
import sys
def get_colors(image_file, numcolors=10, resize=150):
# Resize image to speed up processing
img = Image.open(image_file)
img = img.copy()
img.thumbnail((resize, resize))
@jboner
jboner / latency.txt
Last active July 22, 2024 00:16
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

@armornick
armornick / playwav.c
Created August 24, 2012 07:31
Play a sound with SDL2 (no SDL_Mixer)
#include <SDL2/SDL.h>
#define MUS_PATH "Roland-GR-1-Trumpet-C5.wav"
// prototype for our audio callback
// see the implementation for more information
void my_audio_callback(void *userdata, Uint8 *stream, int len);
// variable declarations
static Uint8 *audio_pos; // global pointer to the audio buffer to be played
@digitaljhelms
digitaljhelms / gist:4287848
Last active July 19, 2024 03:32
Git/GitHub branching standards & conventions

Branching

Quick Legend

Description, Instructions, Notes
Instance Branch
@rtt
rtt / tinder-api-documentation.md
Last active June 21, 2024 04:19
Tinder API Documentation

Tinder API documentation

Note: this was written in April/May 2014 and the API may has definitely changed since. I have nothing to do with Tinder, nor its API, and I do not offer any support for anything you may build on top of this. Proceed with caution

http://rsty.org/

I've sniffed most of the Tinder API to see how it works. You can use this to create bots (etc) very trivially. Some example python bot code is here -> https://gist.github.com/rtt/5a2e0cfa638c938cca59 (horribly quick and dirty, you've been warned!)

@staltz
staltz / introrx.md
Last active July 19, 2024 22:21
The introduction to Reactive Programming you've been missing
@basham
basham / css-units-best-practices.md
Last active July 14, 2024 16:03
CSS Units Best Practices

CSS units

Recommendations of unit types per media type:

Media Recommended Occasional use Infrequent use Not recommended
Screen em, rem, % px ch, ex, vw, vh, vmin, vmax cm, mm, in, pt, pc
Print em, rem, % cm, mm, in, pt, pc ch, ex px, vw, vh, vmin, vmax

Relative units

Relative units

@LaughingSun
LaughingSun / Cuica-1.wav
Last active April 12, 2022 06:34 — forked from armornick/playwav.c
Play a sound with SDL2 added lots of print information and the ability to specify the wav file as first argument. Woohoo.
@lukas-h
lukas-h / license-badges.md
Last active July 11, 2024 07:00
Markdown License Badges for your Project

Markdown License badges

Collection of License badges for your Project's README file.
This list includes the most common open source and open data licenses.
Easily copy and paste the code under the badges into your Markdown files.

Notes

  • The badges do not fully replace the license informations for your projects, they are only emblems for the README, that the user can see the License at first glance.

Translations: (No guarantee that the translations are up-to-date)