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怎么用Lambda求和并且进行类型转换
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怎么用Lambda求和并且进行类型转换
List<String> list = new ArrayList();
list.add("1.1");
list.add("2");
list.add("3.5");我想用Lambda对list求和，并且转换成BigDecimal类型
list.stream().reduce((a,b)-> String.valueOf(new BigDecimal(a).add(new BigDecimal(b))) 这里返回的是String类型的
以下是问题补充：
@kakai：double v = list.stream().mapToDouble(Double::parseDouble).sum();
(53分钟前)
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