how to apply filter on inside array in array of dictionary?

Question

I have a situation like i have array of dictionaries, in which each key has array of specific object. like this.

    // example setup
    struct FruitsData {
        var name: String?
        var id: String?
    }

tableViewSource = [String : [FruitsData]]

so i have to apply filter on this inner array. but i am unable to update the value in final array. I have written this code.

tableViewSource = tableViewSource.filter { ( dictData: (key: String, value: [FruitsData])) -> Bool in
    var arrFruitsData = dictData.value
    arrFruitsData = arrFruitsData.filter{ ( $0.id != nil) }

    if arrFruitsData.count == 0 {
        self.tableViewHeaders = self.tableViewHeaders.filter { $0 != dictData.key }
    }
    return true

    }

like i have remove those values in array whose id has been removed.

for eg if i have these values in array.

var array = ["A": [FruitsData(name: "apple", id: "5"), FruitsData(name: "apricot",id: "")], "M": [FruitsData(name: "mango", id: "9"),    FruitsData(name: "grapes", id: "")]]

Nirav D · Accepted Answer · 2017-05-27 04:39:26Z

2

First of all tableViewSource is not the Array of Dictionary, it is Dictionary with each key having Array as value. Also from you example id is not nil but empty if you want remove object of FruitsData whose id is nil or empty you can make it like this.

var tableViewSource = [String : [FruitsData]]()
tableViewSource.forEach {
    let res = $1.filter { $0.id != nil && $0.id != "" }
    tableViewSource[$0] = res
}

answered May 27, 2017 at 4:39

Nirav D

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2 Comments

user1960279 Over a year ago

thanks a lot.. it solved my problem. but is this not an array of dictionaries?

Nirav D Over a year ago

@user1960279 Welcome mate :) Yes it not array of dictionaries it is dictionary having all values as array

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