英文:
Array of objects to Dictionary in Swift
问题
Here's the translated code portion:
我有一个类似的数组
var data: [UserModal] = [
UserModal(unit: "Unit 1", data: [
ScoreModal(name: "Ney", score: 10 ),
ScoreModal(name: "Mes", score: 20 ),
ScoreModal(name: "Ro", score: 30 ),
ScoreModal(name: "Su", score: 40 ),
]),
UserModal(unit: "Unit 2", data: [
ScoreModal(name: "Ney", score: 10 ),
ScoreModal(name: "Mes", score: 20 ),
ScoreModal(name: "Ro", score: 30 ),
ScoreModal(name: "Su", score: 40 ),
]),
UserModal(unit: "Unit 3", data: [
ScoreModal(name: "Ney", score: 10 ),
ScoreModal(name: "Mes", score: 20 ),
ScoreModal(name: "Ro", score: 30 ),
ScoreModal(name: "Su", score: 40 ),
]),
]
我想计算成员的总分，如下：
var result: [ScoreModal] = [
ScoreModal(name: "Ney", score: 30 ),
ScoreModal(name: "Mes", score: 60 ),
ScoreModal(name: "Ro", score: 90 ),
ScoreModal(name: "Su", score: 120 ),
]
我尝试使用 map 进行操作，但没有成功，请帮助我
If you have any further questions or need assistance with the code, feel free to ask.
英文:
I have an array of like
var data: [UserModal] = [
UserModal(unit: "Unit 1", data: [
ScoreModal(name: "Ney", score: 10 ),
ScoreModal(name: "Mes", score: 20 ),
ScoreModal(name: "Ro", score: 30 ),
ScoreModal(name: "Su", score: 40 ),
]),
UserModal(unit: "Unit 2", data: [
ScoreModal(name: "Ney", score: 10 ),
ScoreModal(name: "Mes", score: 20 ),
ScoreModal(name: "Ro", score: 30 ),
ScoreModal(name: "Su", score: 40 ),
]),
UserModal(unit: "Unit 3", data: [
ScoreModal(name: "Ney", score: 10 ),
ScoreModal(name: "Mes", score: 20 ),
ScoreModal(name: "Ro", score: 30 ),
ScoreModal(name: "Su", score: 40 ),
]),
]
I want to calculate the total score of the members like:
var result: [ScoreModal] = [
ScoreModal(name: "Ney", score: 30 ),
ScoreModal(name: "Mes", score: 60 ),
ScoreModal(name: "Ro", score: 90 ),
ScoreModal(name: "Su", score: 120 ),
]
I tried to manipulate the map but it didn't work
please help me
答案1
得分: 1
接受 @Sumida's 的答案，我刚刚更新了动态键。
var nameArray = data.map { model in
var array = [String]()
guard let arrayModel = model.data else {
return array
}
for data in arrayModel {
array.append(data.name ?? "")
}
return array
}
let flattenedArray = nameArray.reduce([], +)
print(flattenedArray)
let uniqueArray = Array(Set(flattenedArray))
print(uniqueArray)
var scoreModal: [ScoreModal] = []
uniqueArray.forEach{ key in
var totalScore = 0
data.forEach{ user in
user.data?.filter{ $0.name == key}.forEach{ totalScore += $0.score ?? 0 }
}
scoreModal.append(ScoreModal(name: key, score: totalScore))
}
print("ScoreModal: \(scoreModal)")
英文:
Accept @Sumida's answer i just made update for dynamic keys.
var nameArray = data.map { model in
var array = [String]()
guard let arrayModel = model.data else {
return array
}
for data in arrayModel {
array.append(data.name ?? "")
}
return array
}
let flattenedArray = nameArray.reduce([], +)
print(flattenedArray)
let uniqueArray = Array(Set(flattenedArray))
print(uniqueArray)
var scoreModal: [ScoreModal] = []
uniqueArray.forEach{ key in
var totalScore = 0
data.forEach{ user in
user.data?.filter{ $0.name == key}.forEach{ totalScore += $0.score ?? 0 }
}
scoreModal.append(ScoreModal(name: key, score: totalScore))
}
print("ScoreModal: \(scoreModal)")
答案2
得分: 1
使用简单的forEach循环和filter，将计算成员的总分，就像您展示的results一样：
var result: [ScoreModal] = []
["Ney","Mes","Ro","Su"].forEach{ key in
var totalScore = 0
data.forEach{ user in
user.data.filter{ $0.name == key}.forEach{ totalScore += $0.score }
}
result.append(ScoreModal(name: key, score: totalScore))
}
print("---> result: \(result)")
请注意，如果您不想使用关键字数组，可以替换为：
Set(data.map{$0.data.map{$0.name}}.flatMap{$0}).forEach{ key in
....
}
英文:
Using simple forEach loops and a filter, will calculate the total score of the members, like the results you show:
var result: [ScoreModal] = []
["Ney","Mes","Ro","Su"].forEach{ key in
var totalScore = 0
data.forEach{ user in
user.data.filter{ $0.name == key}.forEach{ totalScore += $0.score }
}
result.append(ScoreModal(name: key, score: totalScore))
}
print("---> result: \(result)")
Note, if you don't want to use the array of keys, replace it with:
Set(data.map{$0.data.map{$0.name}}.flatMap{$0}).forEach{ key in
....
}
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