Proposal for tuple comparison operators #45
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Implementation submitted as apple/swift#408. |
| if lhs.0 != rhs.0 { return lhs.0 < rhs.0 } | ||
| if lhs.1 != rhs.1 { return lhs.1 < rhs.1 } | ||
| return lhs.2 < rhs.2 | ||
| } |
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This reads from left-to-right? Like how version numbers work? But doesn’t that tie to a western way of reading? < has subtleties that == doesn’t I think?
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No, it reads from first-to-last. Even if you write in an RTL language, (Int, Double) still has .0 be the Int and .1 be the Double. And this even matches String behavior; the first character in a String is still the first character in a String regardless of whether the character belongs to an LTR or RTL language; the RTL nature of the language only affects how it's displayed on screen. Presumably if you used a Tuple to represent some data that gets displayed on screen, in an RTL locale you'd display the .0 element on the right and the .1 element on the left.
Proposal for tuple comparison operators
Fix typo in actor proposal
Implement comparison operators on tuples up to some arity.
Previous swift-evolution mailing list discussion: https://lists.swift.org/pipermail/swift-evolution/Week-of-Mon-20151207/000892.html