Question

How to filter a dictionary in Swift

Answer 1

import Foundation

let myDict = [1: "AA", 2: "BA", 3: "CO", 4: "BOB"]

let filteredByKey = myDict.filter { $0.key > 1 }

print(filteredByKey)  


 
 
/*
run:
 
[2: "BA", 4: "BOB", 3: "CO"]
 
*/

 

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Answer 2

import Foundation

let myDict = [1: "AA", 2: "BA", 3: "CO", 4: "BOB"]

let filteredByValue = myDict.filter { $0.value.contains("B") }

print(filteredByValue) 


 
 
/*
run:
 
[2: "BA", 4: "BOB"]
 
*/

 

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Answer 3

import Foundation

let myDict = [1: "AA", 2: "BA", 3: "CO", 4: "BOB", 5: "BOOK"]

let filteredCombined = myDict.filter { $0.key > 2 && $0.value.hasPrefix("B") }

print(filteredCombined)  


 
 
/*
run:
 
[4: "BOB", 5: "BOOK"]
 
*/

 

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