Dart/Flutter 中 Money 的数据类型
[英]Data Type for Money in Dart/Flutter
问题描述
It is common knowledge that typical floating point data types (aka float and double ) are in Base 2, thus are bad for storing money because Base 2 numbers can not always accurately represent Base 10 numbers like money.
众所周知，典型的浮点数据类型（又名float和double ）在 Base 2 中，因此不利于存储货币，因为 Base 2 数字不能总是像货币一样准确地表示 Base 10 数字。 To avoid this issue, languages such as Java have implemented data types such as BigDecimal.为了避免这个问题，Java 等语言实现了 BigDecimal 等数据类型。 Is there any similar data type for Dart/Flutter? Dart/Flutter 有类似的数据类型吗？
1 个解决方案
解决方案1
2 已采纳 2020-11-26 21:55:16
As Abion47 said, the best way to store money would be to use the decimal package , which is like BigDecimal in Java and has a load of useful features.正如 Abion47 所说，最好的存钱方式是使用十进制 package ，它就像 Java 中的 BigDecimal 一样，具有很多有用的功能。
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