q -package:swizzle-set

Combinator for the <q> element. Example:

q $ span $ toHtml "foo"

Result:

<q><span>foo</span></q>

QuasiQuoter for a non-interpolating string literal. The pattern portion is undefined.

Quadratic Bezier curve

The quotient

a query parsed from the q parameter

In short, Q provides the Quasi operations in one neat monad for the user. The longer story, is that Q wraps an arbitrary Quasi-able monad. The perceptive reader notices that Quasi has only two instances, Q itself and IO, neither of which have concrete implementations.Q plays the trick of dependency inversion, providing an abstract interface for the user which is later concretely fufilled by an concrete Quasi instance, internal to GHC.

In short, Q provides the Quasi operations in one neat monad for the user. The longer story, is that Q wraps an arbitrary Quasi-able monad. The perceptive reader notices that Quasi has only two instances, Q itself and IO, neither of which have concrete implementations.Q plays the trick of dependency inversion, providing an abstract interface for the user which is later concretely fufilled by an concrete Quasi instance, internal to GHC.

The type of queries over the database db returning results of type a. The s argument is a threading argument meant to restrict cross-usage of QExprs. syntax represents the SQL syntax that this query is building.