Esqlate Cache is a really basic in-memory cache which has a few interesting properties:
cache(params) everywhere, whether the item is cached or not. The reason for …A simple TypeScript function will wait for a condition to be satisfied.
The Esqlate project, which is a way to design an API using PostgreSQL is modelled as a queue based system, so when you issue a request, you don't get back the result immediately, you need to poll …
read moreSometimes you want to process something, but you're not interested in the result immediately because the task is not a priority to you, or maybe even the user.
For this you may well use a Queue of some variety, something like RabbitMQ, Amazon AWS's SQS or maybe even ZeroMQ …
read moreI have a tool called pgpass-env that, given a suitably commented PostgreSQL ~/.pgpass file will allow you to easily set the environmental variables for software that doesn't support reading from that format.
Thinking about this problem, it seems to be a general problem:
Quick JDBC queries respecting UNIX conventions (environmental variables, STDIN, STDOUT etc)
git clone git@github.com:forbesmyester/jdbc-pipe.git && cd jdbc-pipe)lein uberjar.Hacky tools for PostgreSQL that makes interacting / extracting / analysis of data in PostgreSQL easier.
NOTE: Examples are from a PostgreSQL version of ergast.
Sometimes I find I have requests like the following:
read moreRun this query and give me the results [in an Excel file so I can look at …
I have just published my first rust program, first rust library and crates.io package.
It’s a library/program for removing metadata from above the (real) header of CSV files, which gets in the way when writing software to parse the CSV’s
The Git Repository includes full source …
Sometimes you do not need all the data brought from the database into your normal programming language. Using normal aggregate functions such as [SUM, COUNT or AVERAGE](https://www.postgresql.org/docs/8.2/functions-aggregate.html) you may save your …
I wanted to make a blog post which a future LNUG talk will be based on to compare achieving the same output in both NodeJS and PostgreSQL.
While doing this I realised that it would be best to have the code shown side by side like the following:
+-----------------------------------------------------------+
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| # Joining Two …I recently did a talk at LNUG about GraphViz and how using diagrams can really help you explain your ideas to other people. I know it is cliched but pictures (diagrams) really do say a thousand words.
LNUG stands for London Node User Group and as such mostly everything covered …
read moreIn general when I am developing I tend to have unit test results on the right with my code on the left as apposed to having two files open. This means I tend to use C-^ keystroke a lot, which is jump back to last buffer in VIM.
The last …
read moreWhen thinking about problems I sometimes come up with ideas on how to solve them. It might be a great solution, but more often than not they need some finesse and I may want to discuss them with other developers.
I find diagrams are a highly effective way of …
read moreI have a pretty well customized tmux configuration, as do lots of people but there is one thing that I've found difficult to do and isn't in most peoples configuration (that I've seen). This is the ability to move panes between different windows or re-order the windows.
Configuring tmux for …
read moreNoticed this when requiring Ramda:
[BABEL] Note: The code generator has deoptimised the styling of "/home/fozz/Projects/siac-ui/node_modules/ramda/dist/ramda.js" as it exceeds the max of "100KB".Now I love Ramda, you should read about, it's awesome, but I am only actually using a few functions …
read moreI recently re-installed my laptop (which has loopback, WIFI and wired network connections) from scratch and I found that it has "NetworkManager is not running" displayed when I click the NetworkManager applet, which is apparently not that strange. This was straight after an install which was disappointing :-(
My installation method …
read moreWhen I was about 18 and living at my parents, my bedroom was full of old computers which I'd turned into servers and managed to wire up using a BNC network and HowTo's printed out on the college computers... I didn't have internet access. I tought myself TCP/IP networking …
read moreSomething unfortunate happened to me over the weekend... I was writing code using the great Ramda, there was promises going on and the code was wonderful... Then along came the awesome When.js to solve my more complicated future based problems but this made me write code like the following …
read moreOver the last few weeks I've done a few commits making storing data in LocalForage possible. I knew this would be quite easy as even though SyncIt has up to now only been backed by LocalStorage it was wrapped in a way that all access to data had to be …
read moreI have a desire set up virtual machines on my laptop using scripts for testing things like microservices. Unfortunately I don't much like BASH as a provisioning system and would prefer to work with Ansible.
The Init Provisioning scripts are designed to allow easy development of Ansible based virtual machines …
read moreFor most of my working life I've been doing RDD (refresh driven development) but in the last 3-4 years I've been using more and more TDD. It's got to the point that pretty much all functionality new that I write is written using TDD, life is sooooooo much better but …
read moreSome of you may know that I'm pretty interested in Functional Programming with some of the code that I write day to day having a somewhat functional style (while hopefully not being completely alien to our imperative friends). I have spent quite a bit of time trying to learn Haskell …
read moreWhen I saw the Elite Kickstarter I knew about the old Elite games which I never played but I knew had an amazing reputation. I looked around the page watched some video's and decided to back it. Since then I have read all the news releases and watched all …
read moreI currently have a personal project which will almost certainly involve creating a mobile app. I'd ideally like to make it a hybrid native/Phonegap app to maximize the time spent writing cross platform code as apposed to duplicating work between different mobile platforms... The fact that the bulk of …
read moreWent to a great talk about Neo4J at their London offices last night. It was great to hear (new to me) ideas about how to store data.
If I were to sum it up in a really short amount of words I would say that it is somewhat like an …
read moreI've just had an extremely frustrating mostly wasted day with Docker. It turns out that, at least with Ubuntu 14.04 the root user is quite messed up, for example it's home directory ends up being just / and worse than that putting files like .ssh/known_hosts in the root (or …
I am currently (and have been for a long time) in a state of flux with my current editor selection... For a while about 6 months ago I thought I would end up using VIM and even started reading a book about it. I learnt about VIM Golf, the amazing …
read moreToday I am flying to Dublin for 7 days so I can continue my work with CityHook / Indigo and I am currently in the airport passed security... Of course they confiscate all drinks from you... so where to get a drink?
I found that you can get bottled …
read moreSometimes you have a function, that you're planning to use within something like async.waterfall but it's wrote to be synchronous and returns a value instead of using a callback. This function will accept that function, along with a context and return an asynchronous version of that function
var …I have created a simple React Mixin which enables you to use the power of Manip with the awsomeness of React.
When you want to alter data within React you can use the component.setState() or component.setProps() methods. This is wonderful if you want to modify top level data …
I am intending to take the React demonstration from TodoMVC and use it as a basis for demonstrating SyncIt. To enable me to do this I have released two seperate pieces of code, which for contractual reasons were always integrated directly into SyncIt and are now available seperately via GitHub …
read moreCurrying is a concept from functional programming where you allow you a function that would normally need n arguments to be called with fewer arguments. When you do this it will return a function with you current arguments stored, but waiting for the extra arguments. When all arguments …
Today my patch fixing some serialization when calling $.param() which was also used in AJAX calls was merged into Zepto!
This week is incredibly busy for me as I am going to a meetup every day but it started with a great talk by Uncle Bob (Robert C. Martin) about Design Patterns at SkillsMatter. In it he gives what appeared to be a completely unrehearsed a run through of some …
read moreCurrently when I get home from work and I want a bit of a change I'll do a bit of work learning Clojure, which at the moment is writing a script to generate HTML photo albums from a directory structure with images... I'm looking forward to getting it working and …
read moreI'm pretty much settled on using Require.JS for loading front end JavaScript code because:
In this post I want to look at a method I used for writing decoupled easily reusable code within one of my personal projects using a method inspired by Functional Programming.
var emailSender = new EmailSender( /* SMTP …
I was coding along quite happily on a project (soon to be unveiled) and got to testing my code that interacts with the server. I was intending to using Sinon.js to mock this, but the response was never coming back... My code was like this:
xhr("/dataset", {
handleAs …Often as a developer I want to explain something that is either very complicated or very abstract to other people and this is not easy always.
In this situation I might use a diagram but I am not particularly skilled at doing this and I find the whole process incredibly …
read moreLast Tuesday I presented SyncIt to London AJAX. I was surprisingly not that nervous going in, thanks to all the practice, but I feel I was no less nervous throughout the presentation either.
You can see the presentation at the skillsmatter site, who are the really nice people who host …
read moreSo I just got back from MongoDB London 2013 and here is a quick run down of some of the highlights for me...
Optimising for Performance, Scale and Analytics - David Mytton, Server Density. Talked about spotting problems with your deployment and the things you should watch out for as signs …
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Today I disovered a great little tool for helping to draw small flow diagrams and then being able to export them into ASCII! It does not try to be a complicated tool, but instead gives you simple very simple ones just for drawing boxes lines, writing text and moving that …
read moreUsing a combination of IIFE and Dependency Injection I have created a method of writing libraries that is compatible with jQuery, Node.js require(), Dojo AMD and plain old Javascript window. This is available via a public GitHub Gist
After creating this Gist I decided that …
read moreMe Map Reduce is inspired by MongoDB's map/reduce functionality.
In javascript you can easily do map/reduce in modern browsers using those methods already on the Array Class. But using these functions would always cause the output to be the same length as the input and there is little …
read moreToday I wanted to get started on writing the server code for SyncItStore so needed to set up a dev server. I started installing Ubuntu Server and was keeping notes on the steps I needed to replicated it.
I created virtual guests on my laptop using …
read moreI currently am an owner of a Thecus N3200pro NAS. I bought it because it has three disk bays, so can do RAID5 and was similarly priced to a very cheap PC. I was happy with it at first...
Later on I wanted to try out …
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