Skip to content

Instantly share code, notes, and snippets.

View ryankanno's full-sized avatar
🇺🇸
Coding

Ryan Kanno ryankanno

🇺🇸
Coding
View GitHub Profile
@jpoehls
jpoehls / mklink.psm1
Created June 7, 2012 19:40
Native PowerShell wrapper for MKLINK.
@jboner
jboner / latency.txt
Last active September 26, 2025 06:53
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
@datagrok
datagrok / gist:2199506
Last active December 16, 2024 16:14
Virtualenv's `bin/activate` is Doing It Wrong
@maraujop
maraujop / forms.py
Created February 15, 2012 19:04
django-crispy-forms bootstrap form example
# -*- coding: utf-8 -*-
from django import forms
from crispy_forms.helper import FormHelper
from crispy_forms.layout import Layout, Div, Submit, HTML, Button, Row, Field
from crispy_forms.bootstrap import AppendedText, PrependedText, FormActions
class MessageForm(forms.Form):
text_input = forms.CharField()
@n1k0
n1k0 / gist:1501173
Created December 20, 2011 10:44 — forked from fbuchinger/gist:1501115
PhantomJS: Capturing single dom elements as png files
var page = new WebPage(),
address, output, size;
//capture and captureSelector functions adapted from CasperJS - https://github.com/n1k0/casperjs
capture = function(targetFile, clipRect) {
var previousClipRect;
var clipRect = {top: 0, left:0, width: 40, height: 40};
if (clipRect) {
if (!isType(clipRect, "object")) {
throw new Error("clipRect must be an Object instance.");
@steder
steder / aws_sg_recipe.py
Created December 19, 2011 19:11
Create and update AWS security groups using Python and Boto.
#!/usr/bin/env python
"""
Recipe for creating and updating security groups programmatically.
"""
import collections
import boto
@tekacs
tekacs / show
Created April 20, 2011 17:55
This does something essentially equivalent to showoff.io if you have a publicly facing server...
# Usage: show <local-port> <subdomain>
function show() {
DOMAIN=".tekacs.com"
REMOTE="$2$DOMAIN"
ssh -tR 1080:127.0.0.1:$1 vps "sudo ssh -Nl \$USER -L $REMOTE:80:127.0.0.1:1080 localhost"
}