maxByOrNull
inline
fun
<
T
,
R
:
Comparable
<
R
>
>
Array
<
out
T
>
.
maxByOrNull
(
selector
:
(
T
)
->
R
)
:
T
?
(source)
inline
fun
<
R
:
Comparable
<
R
>
>
ByteArray
.
maxByOrNull
(
selector
:
(
Byte
)
->
R
)
:
Byte
?
(source)
inline
fun
<
R
:
Comparable
<
R
>
>
ShortArray
.
maxByOrNull
(
selector
:
(
Short
)
->
R
)
:
Short
?
(source)
inline
fun
<
R
:
Comparable
<
R
>
>
IntArray
.
maxByOrNull
(
selector
:
(
Int
)
->
R
)
:
Int
?
(source)
inline
fun
<
R
:
Comparable
<
R
>
>
LongArray
.
maxByOrNull
(
selector
:
(
Long
)
->
R
)
:
Long
?
(source)
inline
fun
<
R
:
Comparable
<
R
>
>
FloatArray
.
maxByOrNull
(
selector
:
(
Float
)
->
R
)
:
Float
?
(source)
inline
fun
<
R
:
Comparable
<
R
>
>
DoubleArray
.
maxByOrNull
(
selector
:
(
Double
)
->
R
)
:
Double
?
(source)
inline
fun
<
R
:
Comparable
<
R
>
>
BooleanArray
.
maxByOrNull
(
selector
:
(
Boolean
)
->
R
)
:
Boolean
?
(source)
inline
fun
<
R
:
Comparable
<
R
>
>
CharArray
.
maxByOrNull
(
selector
:
(
Char
)
->
R
)
:
Char
?
(source)
inline
fun
<
T
,
R
:
Comparable
<
R
>
>
Iterable
<
T
>
.
maxByOrNull
(
selector
:
(
T
)
->
R
)
:
T
?
(source)
@ExperimentalUnsignedTypes
inline
fun
<
R
:
Comparable
<
R
>
>
UIntArray
.
maxByOrNull
(
selector
:
(
UInt
)
->
R
)
:
UInt
?
(source)
@ExperimentalUnsignedTypes
inline
fun
<
R
:
Comparable
<
R
>
>
ULongArray
.
maxByOrNull
(
selector
:
(
ULong
)
->
R
)
:
ULong
?
(source)
@ExperimentalUnsignedTypes
inline
fun
<
R
:
Comparable
<
R
>
>
UByteArray
.
maxByOrNull
(
selector
:
(
UByte
)
->
R
)
:
UByte
?
(source)
@ExperimentalUnsignedTypes
inline
fun
<
R
:
Comparable
<
R
>
>
UShortArray
.
maxByOrNull
(
selector
:
(
UShort
)
->
R
)
:
UShort
?
(source)
Returns the first element yielding the largest value of the given function or
null
if there are no elements.
import kotlin.test.*
fun main(args: Array<String>) {
//sampleStart
val nameToAge = listOf("Alice" to 42, "Bob" to 28, "Carol" to 51)
val oldestPerson = nameToAge.maxByOrNull { it.second }
println(oldestPerson) // (Carol, 51)
val emptyList = emptyList<Pair<String, Int>>()
val emptyMax = emptyList.maxByOrNull { it.second }
println(emptyMax) // null
//sampleEnd
}
inline
fun
<
K
,
V
,
R
:
Comparable
<
R
>
>
Map
<
out
K
,
V
>
.
maxByOrNull
(
selector
:
(
Entry
<
K
,
V
>
)
->
R
)
:
Entry
<
K
,
V
>
?
(source)
Returns the first entry yielding the largest value of the given function or
null
if there are no entries.
import kotlin.test.*
fun main(args: Array<String>) {
//sampleStart
val nameToAge = listOf("Alice" to 42, "Bob" to 28, "Carol" to 51)
val oldestPerson = nameToAge.maxByOrNull { it.second }
println(oldestPerson) // (Carol, 51)
val emptyList = emptyList<Pair<String, Int>>()
val emptyMax = emptyList.maxByOrNull { it.second }
println(emptyMax) // null
//sampleEnd
}