Decoding lens operators
Date: April 21, 2018
Last modified: April 21, 2018
Notation conventions
The following table provides a quick overview of conventions used in symbolic
operators in the lens library.
| Symbol | Concept | Denotes |
|---|---|---|
^ |
getter | gets value from structure |
~ |
setter | sets values in structure |
% |
over | apply transformation over selected substructure |
= |
state | threads state through |
<< |
before change | returns value before specified change |
< |
after change | returns value after specified change |
? |
Maybe |
optionality |
! |
force | force value |