ProgramGuruTo remove key-value pairs from a map in Kotlin based on values, you need to iterate through the map and check each value. If the value matches the specified condition, remove the corresponding key-value pair.
We can remove key-value pairs from a map in Kotlin by iterating through the map and removing pairs with a specific value.
For example,
myMap with some key-value pairs. In this example, the map has string keys and integer values.entries property and the removeIf method on the map's entry set. For each key-value pair, we check if the value matches the specified value 2.removeIf method removes the key-value pair from the map.println function to verify that the key-value pairs have been removed.fun main() {
// Declare and initialize a mutable map
val myMap: MutableMap<String, Int> = mutableMapOf(
"one" to 1,
"two" to 2,
"three" to 3,
"four" to 2
)
// Remove key-value pairs with specific value
myMap.entries.removeIf { it.value == 2 }
// Print the contents of the map
println(myMap)
}{one=1, three=3}We can remove key-value pairs from a map in Kotlin by iterating through the map and removing pairs with values within a specified range.
For example,
myMap with some key-value pairs. In this example, the map has string keys and integer values.entries property and the removeIf method on the map's entry set. For each key-value pair, we check if the value falls within the specified range (e.g., between 2 and 3 inclusive).removeIf method removes the key-value pair from the map.println function to verify that the key-value pairs have been removed.fun main() {
// Declare and initialize a mutable map
val myMap: MutableMap<String, Int> = mutableMapOf(
"one" to 1,
"two" to 2,
"three" to 3,
"four" to 4
)
// Remove key-value pairs with values in the range [2, 3]
myMap.entries.removeIf { it.value in 2..3 }
// Print the contents of the map
println(myMap)
}{one=1, four=4}We can remove key-value pairs from a map in Kotlin by iterating through the map and removing pairs with values that meet a specified condition.
For example,
myMap with some key-value pairs. In this example, the map has string keys and string values.entries property and the removeIf method on the map's entry set. For each key-value pair, we check if the value meets a specified condition (e.g., if the length of the string is 3).removeIf method removes the key-value pair from the map.println function to verify that the key-value pairs have been removed.fun main() {
// Declare and initialize a mutable map
val myMap: MutableMap<String, String> = mutableMapOf(
"one" to "one",
"two" to "two",
"three" to "three",
"four" to "four"
)
// Remove key-value pairs where value length is 3
myMap.entries.removeIf { it.value.length == 3 }
// Print the contents of the map
println(myMap)
}{three=three, four=four}In this tutorial, we learned How to Remove Key-Value Pairs from a Map Based on Values in Kotlin language with well detailed examples.