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Everywhere: Remove redundant inequality comparison operators
C++20 can automatically synthesize `operator!=` from `operator==`, so there is no point in writing such functions by hand if all they do is call through to `operator==`. This fixes a compile error with compilers that implement P2468 (Clang 16 currently). This paper restores the C++17 behavior that if both `T::operator==(U)` and `T::operator!=(U)` exist, `U == T` won't be rewritten in reverse to call `T::operator==(U)`. Removing `!=` operators makes the rewriting possible again. See https://reviews.llvm.org/D134529#3853062
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40 changed files with 1 additions and 180 deletions
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@ -203,13 +203,10 @@ public:
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[[nodiscard]] bool ends_with(char) const;
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bool operator==(String const&) const;
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bool operator!=(String const& other) const { return !(*this == other); }
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bool operator==(StringView) const;
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bool operator!=(StringView other) const { return !(*this == other); }
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bool operator==(FlyString const&) const;
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bool operator!=(FlyString const& other) const { return !(*this == other); }
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bool operator<(String const&) const;
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bool operator<(char const*) const;
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@ -222,7 +219,6 @@ public:
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bool operator<=(char const* other) const { return !(*this > other); }
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bool operator==(char const* cstring) const;
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bool operator!=(char const* cstring) const { return !(*this == cstring); }
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[[nodiscard]] String isolated_copy() const;
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