jrudolph

• Slab: Cache for kernel level objects (check with top or atop)
• View slab contents: slabtop
• ext4_inode_cache: cached directory/FS-allocation data
• if high: probably because of crashplan syncing stuff
• to clean cache (not sure if this has any positive effect other than showing more free memory): sync; sysctl vm.drop_caches=3

nuthinking

//
//  UIView+CustomTimingFunction.h
//  Instants
//
//  Created by Christian Giordano on 16/10/2013.
//  Copyright (c) 2013 Christian Giordano. All rights reserved.
//

#import <UIKit/UIKit.h>

jessecurry

namespace :paperclip_migration do
  
  desc 'Migrate data'
  task :migrate_s3 => :environment do
    # Make sure that all of the models have been loaded so any attachments are registered
    puts 'Loading models...'
    Dir[Rails.root.join('app', 'models', '**/*')].each { |file| File.basename(file, '.rb').camelize.constantize }
    
    # Iterate through all of the registered attachments
    puts 'Migrating attachments...'

kylefox

# Tell system when Xcode utilities live:
sudo xcode-select -switch /Applications/Xcode.app/Contents/Developer

# Set "opendiff" as the default mergetool globally:
git config --global merge.tool opendiff

linjunpop

Capybara, Rspec, Rails assets pipeline

A clean workaround for running capybara tests on Rails with assets pipeline enabled.

Original: teamcapybara/capybara#500 (comment)

wobbals

package com.opentok.media.avc;

import java.io.IOException;
import java.nio.ByteBuffer;

import android.media.MediaCodec;
import android.media.MediaCodecInfo;
import android.media.MediaFormat;

public class AvcEncoder {

ayakix

from collections import Counter, defaultdict
import sys

try:
    #FILENAME = "/Users/{hoge}/.zhistory"
    FILENAME = sys.argv[1]
except:
    print "USAGE: zsh_history_sort.py <your_history_file>"
    sys.exit(1)

Gab-km

GitHub Flow

• Scott Chacon on the Interwebs(リンク切れ)
• Scott Chacon on the Interwebs
• GitHub Flow - The best way to use Git and GitHub

31 Aug 2011

git-flowの問題点 (Issues with git-flow)

earthgecko

#!/bin/bash
# bash generate random alphanumeric string
#

# bash generate random 32 character alphanumeric string (upper and lowercase) and 
NEW_UUID=$(cat /dev/urandom | tr -dc 'a-zA-Z0-9' | fold -w 32 | head -n 1)

# bash generate random 32 character alphanumeric string (lowercase only)
cat /dev/urandom | tr -dc 'a-z0-9' | fold -w 32 | head -n 1

jboner

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