blanks alternatives and similar packages
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stylish-haskell
DISCONTINUED. Haskell code prettifier [Moved to: https://github.com/haskell/stylish-haskell] -
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ministg
Ministg is an interpreter for a high-level, small-step, operational semantics for the STG machine. -
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InfluxDB – Built for High-Performance Time Series Workloads
* Code Quality Rankings and insights are calculated and provided by Lumnify.
They vary from L1 to L5 with "L5" being the highest.
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README
blanks
Fill-in-the-blanks - A library factoring out substitution from ASTs.
It's a pain to track de Bruijn indices yourself to implement capture-avoiding subsititution,
so this library provides some wrappers that help. One of the best libraries for this is
bound, which uses a clever representation to make
these operations safe and fast. The tradeoff is that you have to define a Monad instance
for your expression functor, which in practice can be tricky. (It's even trickier to derive
Eq and Show!)
This library takes the simpler, slower, and rather "succ-y" free-monad-ish approach,
but with a twist. It expects you to rewrite all name-binding constructors in your expression
as annotations on a single "binder" constructor. This allows you to use the provided Scope
type (or a variant) as a wrapper around your expression functor, which is only required to
implement Functor. This representation is less safe (since you can inspect and manipulate
bound variables), but if you stick to the provided combinators, things will work out fine.
You'll get most of what you want by just importing this module unqualified.
See the Blanks class definition and related methods to manipulate variables and abstractions.
See Scope for the basic wrapper and LocScope for a wrapper with annotations you can use
for source locations and the like. See the test suite for examples.