[Haskell-cafe] What is your favourite Haskell "aha" moment?
fa-ml at ariis.it
Wed Jul 11 12:31:04 UTC 2018
On Wed, Jul 11, 2018 at 12:10:21PM +0000, Simon Peyton Jones via Haskell-Cafe wrote:
> So I thought I'd ask you for help. War stories perhaps - how using
> Haskell worked (or didn't) for you. But rather than talk generalities,
> I'd love to illustrate with copious examples of beautiful code.
> * Can you identify a few lines of Haskell that best characterise
> what you think makes Haskell distinctively worth caring about?
> Something that gave you an "aha" moment, or that feeling of joy when
> you truly make sense of something for the first time.
If your most of your audience uses a dynamically typed language,
I would introduce type inference and how small, painful bugs can
be tracked down by the compiler without having to write a single
type signature bar top level.
Another good one is implementing a tricky function with holes
(in what I have seen described as `hole-driven` development.
Unfortunately, one of Haskell strongest suit (ease of refactoring)
doesn't really shine in bite-sized examples!
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