| 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 | |
| Send 2K bytes over 1 Gbps network 20,000 ns | |
| Read 1 MB sequentially from memory 250,000 ns | |
| Round trip within same datacenter 500,000 ns | |
| Disk seek 10,000,000 ns |
| # Instead of: | |
| # hash[:a].try(:[], :b).try(:[], :c).try(:[], :d) | |
| # you can write | |
| # hash[:a, :b, :c, :d] | |
| class Hash | |
| # h = {:a => {:b => {:c => 1}}} | |
| # p h[:a] # => {:b => {:c => 1}} | |
| # p h[:a, :b] # => {:c => 1} | |
| # p h[:a, :b, :c] # => 1 |
| class PeopleController < ApplicationController | |
| before_filter :authenticate_user!, :except => [:index, :show] | |
| ... | |
| end |
| *.aux | |
| *.glo | |
| *.idx | |
| *.log | |
| *.toc | |
| *.ist | |
| *.acn | |
| *.acr | |
| *.alg | |
| *.bbl |
This document has been modified from its [original format][m1], which was written by Ning Shang (geek@cerias.net). It has been updated and reformatted into a [Markdown][m2] document by [Woody Gilk][m3] and [republished][m4].
When working with a remote git repository which is hosted on a third-party storage server, data confidentiality sometimes becomes
| public void testCaseToString() { | |
| // This test wins the award for twisted snake tail eating while | |
| // writing self tests. And you thought those weird anonymous | |
| // inner classes were bad... | |
| assertEquals("testCaseToString(junit.tests.framework.TestCaseTest)", toString()); | |
| } | |
| // | |
| /** |
| require "rspec" | |
| CONVERSIONS_FACTOR = [ | |
| [100, "C"], [90, "XC"], [50, "L"], [40, "XL"], [10, "X"], [9, "IX"], [5, "V"], [4, "IV"], [1, "I"] | |
| ] | |
| def conversion_factors_for number | |
| CONVERSIONS_FACTOR.find { |arabic, _| arabic <= number } | |
| end | |
| def convert number |
I spent a lot of time trying to find a pretty optimal (for me) setup for Clojure… at the same time I was trying to dive in and learn it. This is never optimal; you shouldn't be fighting the environment while trying to learn something.
I feel like I went through a lot of pain searching Google, StackOverflow, blogs, and other sites for random tidbits of information and instructions.
This is a comprehensive "what I learned and what I ended up doing" that will hopefully be of use to others and act as a journal for myself if I ever have to do it again. I want to be very step-by-step and explain what's happening (and why) at each step.
| find DIR -print0 | xargs -0 -n 100 bundle exec rake TASK |
| # mass assign yay | |
| args.each do |key, value| | |
| m = "#{key}=" | |
| self.send(m, value) if self.respond_to?( m ) | |
| end |
