Ohlc.fromJson constructor
Implementation
Ohlc.fromJson(Map<String, dynamic> json)
: this.datein = formatter.parse(json['datein'].toString(), true),
this.open = double.parse(ifNullReturnEmpty(json['open'])),
this.high = double.parse(ifNullReturnEmpty(json['high'])),
this.low = double.parse(ifNullReturnEmpty(json['low'])),
this.close = double.parse(ifNullReturnEmpty(json['close']));