| Copyright | 2013-2017 Kei Hibino |
|---|---|
| License | BSD3 |
| Maintainer | [email protected] |
| Stability | experimental |
| Portability | unknown |
| Safe Haskell | Safe-Inferred |
| Language | Haskell2010 |
Database.Relational.Scalar
Contents
Description
This module defines type classes and templates for scalar queries.
Synopsis
- class PersistableWidth ct => ScalarDegree ct
- defineScalarDegree :: TypeQ -> Q [Dec]
Single degree constraint
class PersistableWidth ct => ScalarDegree ct Source #
Constraint which represents scalar degree.
Instances
| ScalarDegree ct => ScalarDegree (Maybe ct) Source # | |
Defined in Database.Relational.Scalar | |
defineScalarDegree :: TypeQ -> Q [Dec] Source #
ScalarDegree instance templates.