如何在swift中获取字典中值的总和?
字典:[字符串:双精度]=[:] 字典=[07/03/21:331,08/03/21:854,09/03/21:-80] 如何添加字典的值? sum=331+854+-80变量字典:[字符串:双精度]=[:] 字典=[07/03/21:331,08/03/21:854,09/03/21:-80] 设sum=dictionary.compactMap{$0.value}.reduce0+ 打印总数 为什么不干脆让sum=dictionary.reduce0{$0+$1.value}?顺便说一句,Swift 5.2或更高版本可以使用keyPath compactMap\.valuelet sum=dictionary.reduce0{$0+$1.value}如何在swift中获取字典中值的总和?,swift,Swift,字典:[字符串:双精度]=[:] 字典=[07/03/21:331,08/03/21:854,09/03/21:-80] 如何添加字典的值? sum=331+854+-80变量字典:[字符串:双精度]=[:] 字典=[07/03/21:331,08/03/21:854,09/03/21:-80] 设sum=dictionary.compactMap{$0.value}.reduce0+ 打印总数 为什么不干脆让sum=dictionary.reduce0{$0+$1.value}?顺便说一句,S