Filter dictionary with value as array of an arrays in swift programmatically

Question

I have the following dictionary and I would like to filter as follows

var emojiDict = [String: [[String]]]()
emojiDict = ["key one":[["item name 1", "item photo 1"],["item name 2", "item photo 2"], ["item name 3", "item photo 3"]],

"key two":[["item name 1", "item photo 1"],["item name 2", "item photo 2"], ["item name 3", "item photo 3"]],

"key three":[["item name 4", "item photo 1"],["item name 2", "item photo 2"], ["item name 3", "item photo 3"]]]

I would like to filter the above dictionary with search term item name 1 and return the following results

emojiDict = ["key one":[["item name 1", "item photo 1"]],

"key two":[["item name 1", "item photo 1"]]]

I tried below solution but it didn't work

let searchText = "item name 1"

let emojiDictFiltered = emojiDict.mapValues { $0.filter { $0.hasPrefix(searchText) } }.filter { !$0.value.isEmpty }

I kindly request for your assistance.

Yeah, I'm trying to filter the dictionary based on search results. I would like to return the results that contains the search term — ashwyll solutions
– ashwyll solutions, Commented Sep 28, 2022 at 9:43

Joakim Danielson · Accepted Answer · 2022-09-28 10:15:21Z

1

Here is a solution using reduce(into:) to filter out the matches

let filtered = emojiDict.reduce(into: [String: [[String]]]()) {
    let result = $1.value.filter { $0.contains(searchTerm)}
    if result.isEmpty == false {
        $0[$1.key] = result
    }
}

edited Sep 28, 2022 at 10:15

answered Sep 28, 2022 at 9:45

Joakim Danielson

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8 Comments

ashwyll solutions Over a year ago

Thanks for your response. Let me try it out

Joakim Danielson Over a year ago

@ashwyllsolutions I have modified my answer

ashwyll solutions Over a year ago

Thankyou for response Joakim. However, Both the solutions you have provided return dictionary with keys but empty values.

Joakim Danielson Over a year ago

Not for me when testing on your sample using your search term.

ashwyll solutions Over a year ago

Okey let me try once more may be I could be making certain errors

|

ashwyll solutions · Accepted Answer · 2022-09-28 15:03:34Z

0

Finally I have managed to solve the issue I'm facing

var emojiDictFiltered = [String: [[String]]]()

for (key, value) in emojiDict {
            let result = value.filter { (dataArray:[String]) -> Bool in
                return dataArray.filter({ (string) -> Bool in
                    return string.contains(searchText!)
                }).count > 0
            }
            
            if result.isEmpty == false {
                emojiDictFiltered[key] = result
            }
        }

edited Sep 28, 2022 at 15:03

answered Sep 28, 2022 at 11:02

ashwyll solutions

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2 Comments

Joakim Danielson Over a year ago

You can't let declare emojiDictFiltered since it is a variable.

ashwyll solutions Over a year ago

Sorry, it is a copying error

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