fbuchinger

OxJs - jQuery for your Bytes

OxJs (speak: HexaJs) is a utility library for javascript, that facilitates parsing and creation of binary data in Javascript. While this sounds weird in the first moment, there are a few areas where OxJs can come in handy:

• If you need to transfer huge amounts of numercial data via AJAX, binary encoding can be much more space-efficient than transfering it in JSON. The number 41239 for example needs 5 Bytes in JSON, but only 2 Bytes in binary encoding (unsigned short). A more practical example is the The Google Maps Polyline Utility, which saves over 80% of the json payload by binary encoding. However, de- and encoding binary information can be a quite tricky and this is were OxJs helps.

• For client-side file parsing: Recent enhancements in Javascript allow us byte access for to-be-uploaded files. This can be used to perform enhanced sanity che

ionas

# Google Art Project fullsize image downloader.
# By Henrik Nyh <http://henrik.nyh.se> 2011-02-05 under the MIT license.
# Requires Ruby and ImageMagick.
#
# Usage e.g.:
#   ruby google_art_project.rb http://www.googleartproject.com/museums/tate/portrait-of-william-style-of-langley-174
#
# You can specify multiple URLs on the command line, separated by space.
# Or you can specify no URLs on the command line and instead list them at the end of this file, one on each line,
# with "__END__" before the list.

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

chitan

//This sample is how to use websocket of Tomcat.
package wsapp;

import java.io.IOException;
import java.nio.ByteBuffer;
import java.nio.CharBuffer;
import java.util.ArrayList;
import org.apache.catalina.websocket.MessageInbound;
import org.apache.catalina.websocket.StreamInbound;
import org.apache.catalina.websocket.WebSocketServlet;

gilbertwat

package com.gilbert.wat.widget;

import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.util.Calendar;

import android.app.DatePickerDialog;
import android.content.Context;
import android.os.Build;
import android.widget.DatePicker;

jednano

Git Cheat Sheet

Initial Setup

Initialize a repo

Create an empty git repo or reinitialize an existing one

git init

mtougeron

# VCL for Varnish - How to cache your dynamic pages 
# SFPHP.org Apr 9, 2013

# See: https://github.com/varnish/libvmod-header
# This varnish mod allows us to easily manipulate the Set-Cookie responses
import header;

probe varnish_probe {
  .url = "/ping";
  .timeout = 2s;

edwardbeckett

sourceSets {
    generated {
        java {
            srcDirs = ['src/main/generated']
        }
    }
}

configurations {
    querydslapt

jkuipers

<mvc:annotation-driven conversion-service="conversionService" ignoreDefaultModelOnRedirect="true">
    <mvc:argument-resolvers>
        <bean class="org.springframework.data.web.PageableArgumentResolver"/>
    </mvc:argument-resolvers>
</mvc:annotation-driven>

<bean class="org.springframework.data.repository.support.DomainClassConverter">
    <constructor-arg ref="conversionService"/>
</bean>

rponte

// ...
configurations {
    all*.exclude group: 'xml-apis', module: 'xmlParserAPIs'
}

// Equivalent to:
configurations {
    all.collect { configuration ->
        configuration.exclude group: 'xml-apis', module: 'xmlParserAPIs'
    }