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String-option

Fixtype of optional strings.

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

Subtopics

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