nerdcruft/libcruft-util
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random: materialise the offset temporary for container choose

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This helps a little in some debugging situations and isn't terrifically
expensive.
This commit is contained in:
Danny Robson 2019-05-12 11:31:29 +10:00
parent 98705a61c9
commit 9a8679c733
1 changed files with 6 additions and 4 deletions
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10
random.hpp
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@ -165,9 +165,11 @@ namespace cruft::random {
if (data.empty ()) if (data.empty ())
return data.end (); return data.end ();
return std::next ( auto const offset = uniform (
data.begin (), typename ContainerT::size_type {0},
uniform (typename ContainerT::size_type {0}, data.size () - 1) data.size () - 1
); );
return std::next (data.begin (), offset);
}
} }
};