Problem Consider the fraction, n/d, where n and d are positive integers. If n < d and HCF(n,d)=1, it is called a reduced proper fraction. If we list the set of reduced proper fractions for d <= 8 in ascending order of size, we get: 1/8, 1/7, 1/6, 1/5, 1/4, 2/7, 1/3, 3/8, 2/5, 3/7, [...]

Fol­low on from my pre­vi­ous test which showed that the ServiceStack.Text JSON seri­al­izer was the top dog in town, I came across a lit­tle library called fastJ­son on code­plex so nat­u­rally I had to test it out and see how it com­pares to the rest! So using my Sim­ple­SpeedTester and repeat­ing the same test as [...]

Indexer If your have a type that represents a collection of values, adding a custom indexer gives you a natural way to index directly into the object using the .[ ] operator. Take this simple Calendar class for instance, which keeps a map (F# equivalent of a Dictionary<TKey, TValue>) of notes against DateTime values: By [...]

Normally, with languages like C# or Java, there is quite a bit of overhead in creating a quick and dirty program to do small tasks like bulk renaming files in a director, etc. This is the spot that is filled by scripting languages like Python, Perl and Ruby, but did you know that you can [...]

I touched on the topic of memoization in the past in relation to doing aspect-oriented programming with PostSharp, however, with functional languages like F#, Haskell or Erlang there is no such frameworks (although PostSharp should still work with F# to some extent) to help you. That’s not to say that you can’t do AOP in [...]