tieubao

Latency Comparison Numbers
--------------------------
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

tieubao

# xcode-build-bump.sh
# @desc Auto-increment the build number every time the project is run. 
# @usage
# 1. Select: your Target in Xcode
# 2. Select: Build Phases Tab
# 3. Select: Add Build Phase -> Add Run Script
# 4. Paste code below in to new "Run Script" section
# 5. Drag the "Run Script" below "Link Binaries With Libraries"
# 6. Insure that your starting build number is set to a whole integer and not a float (e.g. 1, not 1.0)

tieubao

#!/bin/bash

# Erlang
ERLANG_VERSION=${ERLANG_VERSION:-19.0}
ERLANG_CACHED_DOWNLOAD="${HOME}/cache/OTP-${ERLANG_VERSION}.tar.gz"
ERLANG_DIR=${ERLANG_DIR:="$HOME/erlang"}

# Elixir
ELIXIR_VERSION=${ELIXIR_VERSION:-1.3.1}
ELIXIR_CACHED_DOWNLOAD="${HOME}/cache/elixir-v${ELIXIR_VERSION}.zip"

tieubao

web: MIX_ENV=prod mix phoenix.server

tieubao

Status

READY/IN DEVELOPMENT/HOLD

Migrations

YES | NO

Description

A few sentences describing the overall goals of the pull request's commits.

Related PRs

tieubao

inoremap <silent> = =<Esc>:call <SID>ealign()<CR>a
function! s:ealign()
  let p = '^.*=\s.*$'
  if exists(':Tabularize') && getline('.') =~# '^.*=' && (getline(line('.')-1) =~# p || getline(line('.')+1) =~# p)
    let column = strlen(substitute(getline('.')[0:col('.')],'[^=]','','g'))
    let position = strlen(matchstr(getline('.')[0:col('.')],'.*=\s*\zs.*'))
    Tabularize/=/l1
    normal! 0
    call search(repeat('[^=]*=',column).'\s\{-\}'.repeat('.',position),'ce',line('.'))
  endif

tieubao

Update (10am)

• RPUSH, SADD needs to support multiple values
• Command names are case-insensitive, parameter and values are case-sensitive and must be all lowercase.
• If a command doesn't specify return value, please return OK if successful, or follow the error code.
• Updated sample tests (see link in the sample tests section)
• SET will always overwrite the value for that key

Grokking Challenge Finale

tieubao

type (
	// BuoyCondition contains information for an individual station.
	BuoyCondition struct {
		WindSpeed     float64 `bson:"wind_speed_milehour"`
		WindDirection int     `bson:"wind_direction_degnorth"`
		WindGust      float64 `bson:"gust_wind_speed_milehour"`
	}
 
	// BuoyLocation contains the buoy's location.
	BuoyLocation struct {

tieubao

Deploy your own PaaS!

Setting up Dokku with DigitalOcean and Namecheap

..or how I made my own heroku in a few hours for $3.98.

This write-up owes a great deal to dscape's Node.js Deployments with Docker, Dokku, & Digital Ocean, the dokku project itself, and the fine folks working on dokku's issues. I took dscape's article as a starting point when trying this out but found some details lacking so I documented my own process for getting dokku up and running.

1. Get a domain

tieubao

# Do not refactor, it is a bad practice. YOLO

# Not understanding why or how something works is always good. YOLO

# Do not ever test your code yourself, just ask. YOLO

# No one is going to read your code, at any point don't comment. YOLO

# Why do it the easy way when you can reinvent the wheel? Future-proofing is for pussies. YOLO