[英]SWIFT: how to print with a For in Loop with dictionary in dictionary
我想知道如何只打印名称,或者尽可能打印各种名称。 至此,我有一个简单的for Loop打印整个集合。
var players: [[String: Any]] = [
["Name": "Joe Smith",
"Height": 42,
"Experience": true,
"Guardians": "Jime and Jan Smith",
"Team": ""],
["Name": "Jill Tanner",
"Height": 36,
"Experience": true,
"Guardians": "Clara Tanner",
"Team": ""],
["Name": "Bill Bon",
"Height": 43,
"Experience": true,
"Guardians": "Sara and Jenny Bon",
"Team": ""],
]
for teamSelector in players {
print(players)
}
迅捷3
对于打印值:
players.values.forEach { (value) in
print(value)
}
对于打印“名称”(称为“键”):
players.keys.forEach { (key) in
print(key)
}
您可以用其他样式编写如下:
for key in players.keys{
print("The key is: \(key)")
print("The value is: \(players[key])")
}
您可以使用您的示例进行以下操作,但已进行了更新以获取名称:
for teamSelector in players {
print(teamSelector["Name"])
}
您还可以使用map打印所有名称:
print(players.map { $0["Name"] })
另一种选择是循环播放每个播放器,并将名称转换为字符串,然后显示名称。 在这里使用flatMap确保所有名称都是字符串。
for name in players.flatMap({ $0["Name"] as? String }) {
print(name)
}
这只会打印名称:
player.foreach(){print($ 0 [“ Name”])
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