"Fails to compile unless the tuple has exactly one element of that type."

That type here being int and double.

Clever, but not robust.

There might be something wrong with tests in C++ Clang 8 C++17

I get:

But you can join it easily

My problems with test cases:

Clang 8 C++17

"Low aces are NOT valid in this kata."

compare_poker_hands

Test case: Assert::That (run_test ("2S 3H 4H 5S AC", "AH AC 5H 6H AS", Result::Win )); // "Low-ace straight wins of three of a kind"

Why low ace wins, when it's banned?

random_compare_poker_hands

testCase 11

Player hand: 2C 3C 4C 5C AH // nothing - best ace (or low-ace straight, which should be banned)

Opponent hand: 4D 4S 8C JS KH // a pair

expected Win, should be Loss, since low-aces are banned

testCase 122

Player hand: 2C 3C 4C 5C AH // nothing - best ace then 5 (or low-ace straight, which should be banned)

Opponent hand: 6S 9D TH KD AD // nothing - best ace then king

expected Win, should be Loss, since low-aces are banned and king is better than 5

testCase 149

Player hand: 3S 5S 7C 7H 7S // triplet

Opponent hand: 2C 3C 4C 5C AH // nothing - best ace (or low-ace straight, which should be banned)

expected Loss, should be Win, since low-aces are banned

testCase 160

Player hand: 3C 5D 5S KH KH // two pairs

Opponent hand: 2C 3C 4C 5C AH // nothing - best ace (or low-ace straight, which should be banned)

expected Loss, should be Win, since low-aces are banned

testCase 244

Player hand: 2C 3C 4C 5C AH // nothing - best ace (or low-ace straight, which should be banned)

Opponent hand: 2H 3H 3S 4C 4H // two pairs

expected Win, should be Loss, since low-aces are banned

testCase 297

Player hand: 2C 3C 4C 5C AH // nothing - best ace (or low-ace straight, which should be banned)

Opponent hand: 2H 7C 7H 7S KH // a triplet

expected Win, should be Loss, since low-aces are banned

testCase 357

Player hand: 2H 3H 3S 4C 4H // two pairs

Opponent hand: 2C 3C 4C 5C AH // nothing - best ace (or low-ace straight, which should be banned)

expected Loss, should be Win, since low-aces are banned

testCase 368

Player hand: 2C 3C 4C 5C AH // nothing - best ace (or low-ace straight, which should be banned)

Opponent hand: 2H 4H 8D KC KS // a pair

expected Win, should be Loss, since low-aces are banned

testCase 405

Player hand: 2H 3H 3S 4C 4H // two pairs

Opponent hand: 2C 3C 4C 5C AH // nothing - best ace (or low-ace straight, which should be banned)

expected Loss, should be Win, since low-aces are banned

Still an issue in Clang 8 C++17

Well, no one expected robustness, I guess

Now imagine a plot twist where he used a code to generate this table.