• CSView 2.0 Alpha 1

    May 25 2020

    CSView 2.0 Alpha 1 for MacOS is now available for download!

    CSView 2.0 Alpha 1
  • MacOS Catalina - Notarization and App Store Signing with Java 11

    Oct 13 2019

    With the release of macOS Catalina (10.15) there have been some changes to the way software needs to be signed. In particular, Apple has introduced a new Notarization service which allows developers to pre-register the digital signature of an application so that it can be later checked by the operating system when a user downloads software outside the App Store.

    I took this as a good opportunity to update to Java 11, and the rest of this article covers the changes I’ve needed to make to the packaging process.

  • Streaming multipart HTTP requests in Go

    Feb 23 2019

    Having seen Peter Bourgon’s post on multipart http responses come up in the Golang Weekly newsletter, I thought I would write some notes on a related problem I was looking at recently: how to stream a multipart upload to a remote HTTP server.

  • CompactList

    Feb 24 2018

    CompactList implements the List<Long> interface, but internally it uses a tree of variable word-width segments to improve performance and memory usage compared to an ArrayList.

    CompactList
  • Generic Adapters in Go

    Aug 13 2017

    While playing about with ideas for generic types in Go, I have come up with what I’m calling a ‘Generic Adapter’.

    The approach I’ve taken here is essentialy that described by Kevin Gillette in a 2013 Post to golang-nuts. It implements ‘erasure-style’ generics by wrapping the generic implementation of each method with an adapter function which handles type assertions for the caller.

  • Backblaze B2 Performance Part 2

    Dec 15 2015

    After my earlier experiments with B2, I had an extremely interesting call with Backblaze about B2 features and performance.

    Firstly, they have recently added a caching layer to speed up serving repeatedly requested files. This reduces the delay as the file is reassembled from Reed-Solomon slices. They also suggested that I do some new tests, as they thought I should be seeing faster speeds, even for first-access.

  • Backblaze B2 and Go

    Nov 30 2015

    I’ve been implementing a Go client library for the Backblaze B2 cloud storage service: go-backblaze. It works extremely well, but is a bit slow to get files back.

    Update 12th December: I’ve spoken to Backblaze, who have been working to improve performance. I have performed some new tests and written them up.

  • Magnets

    Oct 10 2015

    After reading this article about Magnetic Poetry I was taken by the idea that the fridge was no longer the central notice board of the home:

    Magnets
  • Languamatch

    May 12 2015

    Languamatch was an experimental service for locating language exchange partners based on shared interests and skill levels.

    Languamatch
  • Furor

    May 06 2015

    Furor is a web content curation tool for businesses.

    Furor
  • Organise Asana Projects

    Sep 25 2013

    UPDATE: Ditto - the successor to this tool - has now been launched. Please give it a go and let me know how you get on!

    I was faced recently with wanting to move Asana projects from one workspace to another. Unfortunately this isn’t a feature in the Asana interface (yet).

    There’s a PHP script floating around GitHub which will copy tasks between projects. This requires you to do some manual checking of project IDs, and you need to create the target project in advance, so I’ve extended the script and written a front-end web interface for it.

  • File sync and cloud storage client comparison

    Jul 25 2013

    I’ve been trying out a number of file sync clients recently, finding that many are trying to solve the same problem and meeting with varying success. Probably the best-known service in this category is Dropbox, but nearly every big cloud services company, and a multitude of startups which base their services on top of them, are providing a ‘cloud drive’ of some description.

  • SlimTweet

    May 12 2013

    SlimTweet tries to shorten a message by applying a set of rules. For example, and will be replaced by &, while it is will be replaced by it's.

    SlimTweet
  • Plex, SSL and Nginx

    Mar 24 2013

    I’ve been experimenting with the Plex Media Server, and decided to have a go at securing remote access to the ‘Web Client’ interface using SSL (by default it runs over an unencrypted HTTP connection).

    This post is essentially a gathering of instructions from where I found them on the internet.


    My server is set up as follows:

    • Ubuntu 12.04 64-bit
    • Latest Plex Media Server distribution
    • Nginx 1.3.14 development build (more on this later)

    Installing Plex

    Nov 2021: Plex have changed some of their URLs and the wiki no longer seems to be available.

    You can download a debian package for Ubuntu from the download page on the new Plex website.

    Support can be found on the Plex forums.

    The below information is no longer up to date

  • Resampling for fun and profit

    Dec 05 2012

    I’m a co-author on a paper which was presented at RTNS this year. Sadly I didn’t have time to attend the conference, but it’s nice to have been able to contribute!

    Resampling for fun and profit
  • Dynamic Disqus Instantiation

    Aug 27 2012

    I needed to use Disqus from a GWT app, so I needed to solve the problem of loading threads on demand as virtual pages in the app were changed.

    A small amount of reverse engineering and experimentation led me to construct a utility class (below).

    I also posted this answer on Stack Overflow.

  • Spotify for Linux media keys with DBUS

    May 10 2011

    Now that Spotify has discontinued the free account, and restricted me to an ‘open’ account with only 10 hours of music a month, I’ve ended up paying for an ‘unlimited’ account.

    While I’m a little disappointed with this turn of events, it does mean I am now able to use the Linux client. It seems pretty decent so far, but I wanted to map some keys to do things like play/pause and next.

  • Lock-Free IPC

    Mar 16 2011

    I was doing some reading a while back into lock-free algorithms for multi-threaded communication using buffers. The general idea is to use a circular buffer in shared memory to allow one process (or thread) to write data into a buffer so that another process can read it. The algorithm relies on atomic compare-and-swap instructions, which are part of the x86 instruction set and also present in several other architectures which have features designed to assist with concurrency.

  • Enabling IMAP SSL and TLS encryption for mail-notifier under Ubuntu

    Dec 14 2009

    After struggling all morning to find or compile a mail notification applet that supports TLS encryption under Ubuntu, I finally read all the way to the end of the Launchpad bug for mail-notifier (all 119 comments)

  • Shorter Bash Prompts

    Sep 04 2009

    I use Java a lot, and the common practice of naming java packages with long URI-derived namespaces often leads to my bash prompt becoming extremely long. Here’s a script to display an abbreviated path on the bash prompt.

  • Javada 0.1.1

    Feb 02 2009

    I’ve released a new version of Javada today - just a maintenance fix, after an email request for a pre-compiled version. It’s available for download from:

  • Brief introduction to PolyORB

    Nov 10 2008

    I’ve been experimenting with PolyORB at work, and the documentation, while fine for configuring and compiling your application, is sorely lacking on any help with implementing your CORBA servants.

    Here I’ll attempt to provide some brief hints on how to do things that don’t seem to be described in the documentation. The PolyORB mailing list is a good place to find more information.

    Nov 2021: The mailing list seems to have been defunct since around 2016