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  • Abstract-syntax

Definition-option

Fixtype of optional definitions of relations.

This is an option type introduced by fty::defoption. Note that defoption is just a wrapper for fty::defflexsum, so there are :none and :some member types, a case macro, and so forth.

Member Types
:none → definition-option-none
Represents that no definition-option is available, i.e., Nothing or None.
:some → definition-option-some
An available definition-option, i.e., Just val or Some val.

Subtopics

Definition-option-fix
Fixing function for definition-option structures.
Definition-option-equiv
Basic equivalence relation for definition-option structures.
Definition-option-case
Case macro for the different kinds of definition-option structures.
Definition-option-some
An available definition-option, i.e., Just val or Some val.
Definition-option-none
Represents that no definition-option is available, i.e., Nothing or None.
Definition-optionp
Recognizer for definition-option structures.