出典:Wikipedia
出典:『Wikipedia』 (2011/03/16 02:45 UTC 版)
In programming languages (especially functional programming languages) and type theory, an option type or maybe type is a polymorphic type that represents encapsulation of an optional value; e.g. it is used as the return type of functions which may or may not return a meaningful value when they're applied. It consists of either an empty constructor (called None or Nothing), or a constructor encapsulating the original data type A (written Just A or Some A).
| ・option type | |
| ・AAR1 | |
| ・fennic | |
| ・Maxine | |
| ・Bonito | |
| ・cerebrotype | |
| ・lettsomite | |
| ・nonceness | |
| ・day drunk | |
| ・Pharmacy |