Completed IsIsogram() Method

[Peter_Rex]

I just finished testing my IsIsogram() method and here is what I’ve got:

bool FBullCowGame::IsIsogram(FString Word) const
{
	if (Word.length() <= 1) { return true; }  //consider short words to be isograms
	
	TMap <char, bool> LetterSeen;   //create map

	for (auto Letter : Word)  //Loop through all the letters of the word
	{
		Letter = tolower(Letter); 	//make case for caps
		if (!LetterSeen[Letter])    //use map to check for whether a letter has already been used
		{
			LetterSeen[Letter] = true;
		}
		else
		{
			return false;
		}
	}
	return true;
}

All my tests for it thus far have shown it to be working fine.
I tested “\0”, “Aa”, “a”, “”, etc.