| Matching |
Over
Given an Optic, a function from A to B, and a "larger" value S,
produce a T by retrieving the A from the S, applying the function, and
updating the S with the B resulting from the function. |
Pre
Turn an Optic with a unary mapping that can be used for viewing some number of values into an Optic
that views the first value, if it exists. |
Re
Turn an Optic with a unary mapping that can be used for setting (e.g. |
Set
Given an Optic, a "smaller" value B, and a "larger" value S, produce a
T by lifting the Optic into the Identity functor. |
Under
The inverse of Over: given an Iso, a function from T to S, and a "smaller"
value B, return a "smaller" value A by traversing around the type ring ( B -> T
-> S -> A). |
View
Given an Optic and a "larger" value S, retrieve a "smaller" value A by lifting the
Optic into the Const functor. |