My IsIsogram solution!

Really cool being able to see other solutions!

bool FBullCowGame::bIsIsogram(FString Word) const
{
TMap<char, bool> LetterSeen;
for (auto Letter : Word) {
Letter = tolower(Letter);
if (LetterSeen.count(Letter) > 0) {
return false;
}
else {
LetterSeen.insert(std::make_pair(Letter, true));
}
}
return true;
}

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