ProgramGuruTo iterate over entries (key-value pairs) in a map in Kotlin, you can use the entries property along with a for loop or the forEach method. This allows you to access each key-value pair in the map.
We can iterate over entries in a map in Kotlin using a for loop with the entries property, which provides a convenient syntax for iterating over all key-value pairs in the map.
For example,
myMap with some key-value pairs. In this example, the map has string keys and integer values.entries property to get a set of the key-value pairs in the map.println function to verify that we are iterating over all entries.fun main() {
// Declare and initialize a map
val myMap = mapOf(
"one" to 1,
"two" to 2,
"three" to 3
)
// Iterate over entries using for loop
for (entry in myMap.entries) {
println("Key: ${entry.key}, Value: ${entry.value}")
}
}Key: one, Value: 1 Key: two, Value: 2 Key: three, Value: 3
We can iterate over entries in a map in Kotlin using the forEach method, which provides a flexible way to access each key-value pair in the map.
For example,
myMap with some key-value pairs. In this example, the map has string keys and integer values.forEach method to iterate over the key-value pairs in the map.forEach, we access each key and value.println function to verify that we are iterating over all entries.fun main() {
// Declare and initialize a map
val myMap = mapOf(
"one" to 1,
"two" to 2,
"three" to 3
)
// Iterate over entries using forEach method
myMap.forEach { (key, value) ->
println("Key: $key, Value: $value")
}
}Key: one, Value: 1 Key: two, Value: 2 Key: three, Value: 3
We can store entries in a separate list and then iterate over the list in Kotlin, which provides a way to work with key-value pairs independently of the map.
For example,
myMap with some key-value pairs. In this example, the map has string keys and integer values.entries to store the key-value pairs from the map.entries property to get a set of the key-value pairs in the map and convert it to a list using the toList method.entries list and print each key and value to the console using the println function to verify that we have stored all entries separately.fun main() {
// Declare and initialize a map
val myMap = mapOf(
"one" to 1,
"two" to 2,
"three" to 3
)
// Store entries in a separate list
val entries = myMap.entries.toList()
// Iterate over the entries list
for (entry in entries) {
println("Key: ${entry.key}, Value: ${entry.value}")
}
}Key: one, Value: 1 Key: two, Value: 2 Key: three, Value: 3
In this tutorial, we learned How to Iterate Over Entries (Key-Value Pairs) in a Map in Kotlin language with well detailed examples.