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@bishboria
bishboria / springer-free-maths-books.md
Last active Dec 8, 2019
Springer made a bunch of books available for free, these were the direct links
View qr_codify.py
import sys
import subprocess
import tempfile
import urllib
text = sys.stdin.read()
chart_url_template = ('http://chart.apis.google.com/chart?'
'cht=qr&chs=300x300&chl={data}&chld=H|0')
chart_url = chart_url_template.format(data=urllib.quote(text))
@ivanvanderbyl
ivanvanderbyl / post_view.hbs
Last active Sep 23, 2016
A simple Handlebars helper to do automatically updating dates. Requires moment.js
View post_view.hbs
<time>{{timeAgoInWords post.publishedAt}}</time>
@nahurst
nahurst / latency.txt
Created Sep 13, 2012 — forked from jboner/latency.txt
Latency Numbers Every Programmer Should Know
View latency.txt
Latency Comparison Numbers Time Light Distance Approximate Light Distance
-------------------------- ---- -------------- --------------------------
L1 cache reference 0.5 ns 0.15 m Diagonal across your smartphone
Branch mispredict 5 ns 1.5 m Height of Natalie Portman
L2 cache reference 7 ns 2.1 m Height of Shaq
Mutex lock/unlock 25 ns 7.5 m Height of a school flag pole
Main memory reference 100 ns 30 m Half a Manhattan city block (North/South)
Compress 1K bytes with Zippy 3,000 ns 900 m Width of Central Park
Send 1K bytes over 1 Gbps network 10,000 ns 3,000 m Width of Manhattan
Read 4K randomly from SSD* 150,000 ns 45,000 m NYC to Hempstead on Long Island
@piscisaureus
piscisaureus / pr.md
Created Aug 13, 2012
Checkout github pull requests locally
View pr.md

Locate the section for your github remote in the .git/config file. It looks like this:

[remote "origin"]
	fetch = +refs/heads/*:refs/remotes/origin/*
	url = git@github.com:joyent/node.git

Now add the line fetch = +refs/pull/*/head:refs/remotes/origin/pr/* to this section. Obviously, change the github url to match your project's URL. It ends up looking like this:

@jboner
jboner / latency.txt
Last active Dec 8, 2019
Latency Numbers Every Programmer Should Know
View latency.txt
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
@nicerobot
nicerobot / README.md
Last active Nov 23, 2019
Mac OS X uninstall script for packaged install of node.js from https://stackoverflow.com/a/9287292/23056
View README.md

To run this, you can try:

curl -ksO https://gist.githubusercontent.com/nicerobot/2697848/raw/uninstall-node.sh
chmod +x ./uninstall-node.sh
./uninstall-node.sh
rm uninstall-node.sh
@joshmvandercom
joshmvandercom / dropdown_to.rb
Created Feb 27, 2012
Passing a block into a helper
View dropdown_to.rb
# Creates a Bootstrap dropdown
# Ex:
# = dropdown_to "Auctions", auctions_path do
# %li= link_to 'Upcoming Auctions', auctions_path
# %li= link_to 'Past Auctions', past_auctions_path
#
# Returns:
# <li class="dropdown">
# <a class="dropdown-toggle" data-toggle="dropdown" href="/auctions">
# <span>Auction</span>
@gudbergur
gudbergur / README.markdown
Created Feb 19, 2012
Bootstrap's Typeahead plugin extended (allowing for AJAX functionality) among other things
View README.markdown

This is a fork of Bootstrap Typeahead that adds minimal but powerful extensions.

For example, process typeahead list asynchronously and return objects

  # This example does an AJAX lookup and is in CoffeeScript
  $('.typeahead').typeahead(
    # source can be a function
    source: (typeahead, query) ->
      # this function receives the typeahead object and the query string
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