47 lines
810 B
C++
47 lines
810 B
C++
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#include "hash/tuple.hpp"
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#include "tap.hpp"
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#include <string_view>
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// A "hash" that returns the argument's size.
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struct size_hash {
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template <typename ValueT>
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std::size_t
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operator () (ValueT const &val) const
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{ return std::size (val); }
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};
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// A 'mix' function that just sums the arguments.
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struct sum_mix {
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template <typename ...ValueT>
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std::size_t
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operator () (ValueT ...val) const
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{
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return (val + ...);
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}
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};
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int
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main ()
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{
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using namespace std::string_view_literals;
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cruft::hash::tuple<size_hash, sum_mix> h;
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cruft::TAP::logger tap;
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tap.expect_eq (
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h (
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std::make_tuple (
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"foo"sv, std::vector<int> (5)
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)
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),
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8u,
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"size/sum tuple hash"
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);
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return tap.status ();
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}
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