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refs #628 Use expression SFINAE and the void_t trick to simplify some type traits.

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This commit is contained in:
Mathew Sutcliffe
2016-03-25 19:01:07 +00:00
parent f159bdb5bf
commit 7ce1b268df
8 changed files with 117 additions and 85 deletions
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3
src/blackmisc/compare.h
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@@ -56,6 +56,7 @@ namespace BlackMisc
}
template <typename T> static bool baseEquals(const T *a, const T *b) { return *a == *b; }
static bool baseEquals(const void *, const void *) { return true; }
static bool baseEquals(const CEmpty *, const CEmpty *) { return true; }
};
/*!
@@ -107,6 +108,7 @@ namespace BlackMisc
}
template <typename T> static bool baseLess(const T *a, const T *b) { return *a < *b; }
static bool baseLess(const void *, const void *) { return false; }
static bool baseLess(const CEmpty *, const CEmpty *) { return false; }
};
/*!
@@ -130,6 +132,7 @@ namespace BlackMisc
}
template <typename T> static int baseCompare(const T *a, const T *b) { return compare(*a, *b); }
static int baseCompare(const void *, const void *) { return 0; }
static int baseCompare(const CEmpty *, const CEmpty *) { return 0; }
};
} // Mixin