您正尝试遍历数组，将其视为字典. 您必须遍历数组，然后遍历键/值对

You are trying to iterate through an array treating it like a dictionary. You'll have to iterate through the array and then through your key/value pairs

for dictionary in arrayOfMutatingDictionaries{
    for (key,value) in dictionary{
        //Do your stuff
    }
}

添加键/值对非常简单.

Adding a key/value pair is pretty straightforward.

for i in 0..< arrayOfMutatingDictionaries.count{
    arrayOfMutatingDictionaries[i][yourkey] = yourvalue
}

您还可以像这样增加现有值

You can also increment the existing values like this

for i in 0..<arrayOfMutatingDictionaries.count{
    for (key,value) in arrayOfMutatingDictionaries[i]{
        arrayOfMutatingDictionaries[i][key] = value+1
    }
}