LetterValue constructor
Implementation
LetterValue({
String? letter,
String? index,
double? coefficient,
double? value
}) : letter = letter ?? null,
index = index ?? null,
coefficient = coefficient ?? null,
value = value ?? null;
LetterValue({
String? letter,
String? index,
double? coefficient,
double? value
}) : letter = letter ?? null,
index = index ?? null,
coefficient = coefficient ?? null,
value = value ?? null;