Do you remember that scene from the movie 21 where Kevin Spacey gave our protagonist Ben the game show host problem? What Kevin Spacey described is known as the Monty Hall problem. It became famous as a question from a reader’s letter to Marilyn vos Savant’s “Ask Marilyn” column in Parade magazine in 1990. Marilyn’s …
NOTE : read the rest of the series, or check out the source code. Prologue I was at Joy of Coding earlier this year and one of the highlight for me was Crista Lopes’ keynote Exercises in Programming Style. Crista demonstrated how a simple problem of calculating term frequency can be written in a …
Update 24/08/2015 : some helpful people pointed out that I’ve missed a couple of other notable conferences here, including: Leetspeak (10th Oct Stockholm) Distributed Matters Berlin (19th Sep) and Barcelona (21st Nov) CodeMotion Berlin (2nd-3rd Nov), Milan (20th-21st Nov) and Madrid (27th-28th Nov) Lambda World (24th Oct Cadiz) It’s almost that time of the year again, that last …
Note: see the rest of the series so far. I stumbled across this post the other day and problem 2 seems like something I can easily do in APL since it essentially requires you to interleave two arrays. The problem is: Write a function that combines two lists by alternatingly taking elements. For example: given the …
The other day I had a small task to inspect return values of methods and if the following property exists then set it to empty array. public long[] Achievements { get; set; } This needed to happen once on every web request, and I decided to implement it as a PostSharp attribute. WHY I …
Fasterflect vs HyperDescriptor vs FastMember vs Reflection Read More »
I recently gave a talk on the various use cases we have for F# at Gamesys Social at the Tokyo F# User Group during my trip there. The slides are available on Slideshare and I’ll share links to recording once they become available. F# at GameSys from Yan Cui
Note: see the rest of the series so far. This is a classic interview question, and after some experimentation I ended up with the following solution in APL: $latex F \ \iota 100$ => 1 2 Fizz 4 Buzz Fizz 7 8 Fizz Buzz 11 Fizz 13 14 FizzBuzz 16 17 Fizz 19 Buzz Fizz …
Note: see the rest of the series so far. Surprisingly, my last post on APL did well on HackerNews, turns out there is genuine interest in APL out there, which is great to see I have been busy with a number of conferences and talks since then so I haven’t had time to revisit APL. …
In the last post, we looked at some inefficiencies with reference types in .Net and perhaps oversold value types a little In any case, now that we’ve made the initial sale and you’re back for more, let’s talk about some pitfalls wrt the use of value types you should be aware of. Specifically let’s focus on cases …
(Update 2015/07/21 : read the next post in this series to learn about the places where implicit boxing happens with value types and how you can prevent them) I chanced upon Sasha Goldshtein’s excellent book, Pro .Net Performance : Optimize Your C# Application, a few years back and I thoroughly enjoyed it. Even though …
Smallest .Net ref type is 12 bytes (or why you should consider using value types) Read More »
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