1
我使用這個代碼:增加值字典不走正確
var dictionary: [Int:Int] = [:]
var p = 1
for _ in odds{
if p == 1{
dictionary[0] = 0
}
dictionary.updateValue(0, forKey: p)
p += 1
print(dictionary)
}
我得到這個作爲輸出:
[0: 0, 1: 0]
[2: 0, 0: 0, 1: 0]
[2: 0, 0: 0, 1: 0, 3: 0]
[4: 0, 2: 0, 0: 0, 1: 0, 3: 0]
[4: 0, 5: 0, 2: 0, 0: 0, 1: 0, 3: 0]
[2: 0, 4: 0, 5: 0, 6: 0, 0: 0, 1: 0, 3: 0]
[2: 0, 4: 0, 5: 0, 6: 0, 7: 0, 0: 0, 1: 0, 3: 0]
[8: 0, 2: 0, 4: 0, 5: 0, 6: 0, 7: 0, 0: 0, 1: 0, 3: 0]
[8: 0, 2: 0, 4: 0, 9: 0, 5: 0, 6: 0, 7: 0, 0: 0, 1: 0, 3: 0]
[8: 0, 10: 0, 2: 0, 4: 0, 9: 0, 5: 0, 6: 0, 7: 0, 0: 0, 1: 0, 3: 0]
我希望它有[0:0,1:0 。2:0,3:0等]
如何使這項工作? THX
的順序字典中的鍵/值對是未指定的* –
是的,這是可以預料到的,因爲「字典」中的鍵值對的順序未指定 - *完全*與您添加它們的順序無關。 – Hamish
Swift中的字典類型未被排序。也許這可能有幫助? http://timekl.com/blog/2014/06/02/learning-swift-ordered-dictionaries/ – dfd