Collection count can be converted to size
Reports calls to Collection<T>.count()
.
This function call can be replaced with .size
.
.size
form ensures that the operation is O(1) and won't allocate extra objects, whereas count()
could be confused with Iterable<T>.count()
, which is O(n) and allocating.
Example:
fun foo() {
var list = listOf(1,2,3)
list.count() // replaceable 'count()'
}
After the quick-fix is applied:
fun foo() {
var list = listOf(1,2,3)
list.size
}
Inspection Details | |
---|---|
Available in: | IntelliJ IDEA 2023.3, Qodana for JVM 2023.3 |
Plugin: | Kotlin, @snapshot@ |
Last modified: 13 July 2023