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es-kumagai/CodePiece.swift

Created January 17, 2023 13:37
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先ほどのコードに、インスタンスが具体的にどう扱われているかを窺うコードを追加。内部的な扱いは同じ様子でも、型注釈を明記すると自己準拠性の扱いが変わってくるみたい。 #CodePiece
Raw
CodePiece.swift
something(a) // "some A"
something(b) // "some A"
something(c) // "some A"
something(a as A) // "Any"
something(b as A) // "Any"
something(c as A) // "Any"
MemoryLayout.size(ofValue: a) // 8
MemoryLayout.size(ofValue: b) // 40
MemoryLayout.size(ofValue: c) // 40
MemoryLayout.size(ofValue: a as A) // 40
MemoryLayout.size(ofValue: b as A) // 40
MemoryLayout.size(ofValue: c as A) // 40
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