Module Cf_data_render.Element

A submodule containing composers for elements indexed by position.

val required : 'r model -> ('v -> 'r) -> (element, 'v) bind

Use required m f to compose a group element where a required output value that matches the model m is obtained by applying the projector f to the rendered value.

val optional : 'r model -> ('v -> 'r option) -> (element, 'v) bind

Use optional m f to compose a group element where an optional output value that matches the model m is obtained by applying the projector f to the rendered value. If the projector returns None then no element is output.

val constant : 'r model -> 'r -> (element, 'v) bind

Use constant m v to compose a group element where a required output value v that matches the model m is produced regardless of the rendered value.