Kotlin · question
Question 4 of 41
What are lambda expressions and their syntax?
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Re-explain
Lambda expressions are anonymous functions that can be passed as arguments or stored in variables.
// Basic syntax: { parameters -> body }
val multiply = { a: Int, b: Int -> a * b }
// Single parameter - 'it' keyword
listOf(1, 2, 3).map { it * 2 }
// Trailing lambda syntax
listOf(1, 2, 3).filter { number ->
number > 1
}
// Multiple parameters
mapOf("a" to 1, "b" to 2).forEach { (key, value) ->
println("$key: $value")
}
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