verify static method
Implementation
static bool verify(Map<String, dynamic>m) {
double bmiN = calc_BMI(
int.tryParse(m[weight])!,
string2inch(m[height])!);
///todo: could be not adding to m
m[bmi] = (bmiN * 100).floor() / 100;
return (int.tryParse(m[age] ?? "99") ??
99) < 39 && (int.tryParse(m[age] ?? "99") ??
99) > 20 &&
(int.tryParse(m[nLives] ?? "0") ??
0) > 0 &&
(bmiN < 35);
}