Specification pattern: Difference between revisions

Revision as of 07:09, 20 May 2019

Revision as of 22:34, 5 January 2020

Line 231:

from dataclasses import dataclass

from typing import Any

class BaseSpecification:

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def not_(self) -> "NotSpecification":

return NotSpecification(self)

@dataclass(frozen=True)

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def is_satisfied_by(self, candidate: Any) -> bool:

return self.first.is_satisfied_by(candidate) and self.second.is_satisfied_by(candidate)

@dataclass(frozen=True)

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def is_satisfied_by(self, candidate: Any) -> bool:

return self.first.is_satisfied_by(candidate) or self.second.is_satisfied_by(candidate)

@dataclass(frozen=True)

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def is_satisfied_by(self, candidate: Any) -> bool:

return not self.subject.is_satisfied_by(candidate)

</source>

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[[Category:Architectural pattern (computer science)]]

[[Category:Articles with example C Sharp code]]

[[Category:Software design patterns]]