setDecrement method Null safety
Decreases a num of an object by x amount
Implementation
void setDecrement(String key, num amount) {
set<Map<String, dynamic>>(
key, <String, dynamic>{'__op': 'Increment', 'amount': -amount});
}
Decreases a num of an object by x amount
void setDecrement(String key, num amount) {
set<Map<String, dynamic>>(
key, <String, dynamic>{'__op': 'Increment', 'amount': -amount});
}