[Haskell-cafe] Coding conventions for Haskell?
schlepptop at henning-thielemann.de
Mon Sep 27 08:52:18 EDT 2010
Alexander Solla schrieb:
> I used a modified version of the "best practices" described by the Perl
> people for Perl code. "Like things go under like things" is the most
> important rule to follow. This rule, in other words, is a convention to
> make your code as "tabular" as possible. Also, most expressions have an
> "outermost" connective. I tend to align them:
> data Foo a b = Foo a
> | Bar b
> | Foobar a b
> That's not so nice looking now, but consider what happens when you have
> four or five arguments:
This indentation relies on Foo remaining Foo in the future. If you alter
Foo then you have to move the block of constructors as well. This gives
line changes in a versioning system where nothing actually has changed.
data Foo a b =
| Bar b
| Foobar a b
avoids this, at least for the type name "Foo".
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