はてなブックマーク

(Este artigo está disponível em português.) One of the most frequent categories of bad questions I see on StackOverflow is: I wrote this program for my assignment and it doesn’t work. [20 lines of code]. And… that’s it. If you’re reading this, odds are good it’s because I or someone else linked here from your StackOverflow question shortly before it was closed and deleted. (If you’re reading this

My erstwhile Microsoft colleague and parallelism guru Stephen Toub just did what I did not do last time: he applied the same treatment I gave to the maybe monad and sequence monad to the task comonad. Check out his awesome blog article! OK, for reals this time, that’s it for the monad series. Next time on FAIC: ever wonder what the langversion switch on the C# compiler is for? Me neither. But next

I wanted to implement concise “pattern matching” in Python, a language which unlike C#, F#, Scala, and so on, does not have any pattern matching built in. Logically a pattern is just a predicate: a function which takes a value and returns true if the value “matches” the pattern, false otherwise. The code for this episode is here. When I embarked on this I realized two things. First, that it might