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## 🐛 Bug report
Consider the code
```
const getMonoidSame: () => Monoid = () => ({
empty: undefined,
concat: (a, b) => a === b ? a : undefined,
})
const keepOnlyCommonValues = Monoid.…
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There are a couple of programming fonts that sport Powerline support symbols out of the box, such as:
- [Fira Code](https://github.com/tonsky/FiraCode)
- [Hasklig](https://github.com/i-tu/Hasklig)
- […
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This would make it compatible with preludes that match `` to `Semigroup` instead of `Monoid`.
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```
What steps will reproduce the problem?
1. Wrap an existing iterable using IterableW.wrap
2. map a function over resulting IterableW
What is the expected output? What do you see instead?
I would e…
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### Description
The following code:
```
const Poll = require('../models/Poll');
```
is being displayed in this way:
![bug-monoid](https://cloud.githubusercontent.com/assets/6842883/19008814/ed4a570…
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**Is your feature request related to a problem? Please describe.**
When working in a codebase with lots of implicits, e.g. using the tagless final technique, you find yourself adding implicit paramet…
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Suppose you're hacking away happily on a library with two independent modules, A.hs and B.hs. Both modules are compiling and passing tests, but they're also spewing warnings that you want to fix befor…
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https://github.com/scalaz/scalaz/pull/1102
- [x] ScalazProperties
### instances
- [x] scala.Set, scalaz.ISet
- [x] Instances for tags (e.g. First and Last)?
- [ ] value-coinductive instances …
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A minimal Cabal package description:
~~~~
Cabal-Version: 2.4
Name: cabal-cond-main
Version: 0.1
Flag alternative
Description: Alternative implementation
Defa…
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Lectures on Semantics: The initial algebra and final coalgebra perspectives
Peter Aczel (1997)
A Tutorial on (Co)Algebras and (Co)Induction: https://fldit-www.cs.tu-dortmund.de/~peter/JR.pdf
Bart…