arrays - 带有字符串数组的 Swift 字典删除值

Question

所以，我有一个包含如下字符串数组的字典:

var dict = ["Section1": ["dev1", "dev2"], "Section2": ["dev3", "dev4"]]

现在我必须能够从数组中删除一个值。 例子: 我想删除“dev4”，无论它在“Section1”还是“Section2”中。

我该怎么做？

Answer 1

Swift4 有一个选项可以将映射应用于字典的值:

var dict = ["Section1": ["dev1", "dev2"], "Section2": ["dev3", "dev4"]]
dict = dict.mapValues{ $0.filter{ $0 != "dev4" } }

给出结果:

dict // -> ["Section1": ["dev1", "dev2"], "Section2": ["dev3"]]