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organization := "net.seratch" | |
name := "sandbox" | |
version := "0.1" | |
scalaVersion := "2.9.1" | |
libraryDependencies ++= Seq( | |
"junit" % "junit" % "4.9" withSources(), |
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#!/bin/bash | |
echo "Generating an SSL private key to sign your certificate..." | |
openssl genrsa -des3 -out myssl.key 1024 | |
echo "Generating a Certificate Signing Request..." | |
openssl req -new -key myssl.key -out myssl.csr | |
echo "Removing passphrase from key (for nginx)..." | |
cp myssl.key myssl.key.org | |
openssl rsa -in myssl.key.org -out myssl.key |
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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 |
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# Customize BASH PS1 prompt to show current GIT repository and branch. | |
# by Mike Stewart - http://MediaDoneRight.com | |
# SETUP CONSTANTS | |
# Bunch-o-predefined colors. Makes reading code easier than escape sequences. | |
# I don't remember where I found this. o_O | |
# Reset | |
Color_Off="\[\033[0m\]" # Text Reset |
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package main | |
/* | |
URL: https://github.com/mccoyst/myip/blob/master/myip.go | |
URL: http://changsijay.com/2013/07/28/golang-get-ip-address/ | |
*/ | |
import ( | |
"net" | |
"os" |
I have moved this over to the Tech Interview Cheat Sheet Repo and has been expanded and even has code challenges you can run and practice against!
\
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if _, err := os.Stat("/path/to/whatever"); os.IsNotExist(err) { | |
// path/to/whatever does not exist | |
} | |
if _, err := os.Stat("/path/to/whatever"); !os.IsNotExist(err) { | |
// path/to/whatever exists | |
} |
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package main | |
import ( | |
"log" | |
"net/http" | |
"github.com/bitly/go-simplejson" | |
"github.com/gorilla/mux" | |
) |
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