first

Common
JVM
JS
Native
1.0
fun <T> Array<out T>.first(): T
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fun ByteArray.first(): Byte
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fun ShortArray.first(): Short
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fun IntArray.first(): Int
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fun LongArray.first(): Long
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fun FloatArray.first(): Float
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fun DoubleArray.first(): Double
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fun BooleanArray.first(): Boolean
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fun CharArray.first(): Char
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@ExperimentalUnsignedTypes fun UIntArray.first(): UInt
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@ExperimentalUnsignedTypes fun ULongArray.first(): ULong
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@ExperimentalUnsignedTypes fun UByteArray.first(): UByte
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@ExperimentalUnsignedTypes fun UShortArray.first(): UShort
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Returns first element.

Exceptions

NoSuchElementException - if the array is empty.

Common
JVM
JS
Native
1.0
inline fun <T> Array<out T>.first(
    predicate: (T) -> Boolean
): T

(source)
inline fun ByteArray.first(
    predicate: (Byte) -> Boolean
): Byte

(source)
inline fun ShortArray.first(
    predicate: (Short) -> Boolean
): Short

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inline fun IntArray.first(predicate: (Int) -> Boolean): Int
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inline fun LongArray.first(
    predicate: (Long) -> Boolean
): Long

(source)
inline fun FloatArray.first(
    predicate: (Float) -> Boolean
): Float

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inline fun DoubleArray.first(
    predicate: (Double) -> Boolean
): Double

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inline fun BooleanArray.first(
    predicate: (Boolean) -> Boolean
): Boolean

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inline fun CharArray.first(
    predicate: (Char) -> Boolean
): Char

(source)
inline fun <T> Iterable<T>.first(
    predicate: (T) -> Boolean
): T

(source)
@ExperimentalUnsignedTypes inline fun UIntArray.first(
    predicate: (UInt) -> Boolean
): UInt

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@ExperimentalUnsignedTypes inline fun ULongArray.first(
    predicate: (ULong) -> Boolean
): ULong

(source)
@ExperimentalUnsignedTypes inline fun UByteArray.first(
    predicate: (UByte) -> Boolean
): UByte

(source)
@ExperimentalUnsignedTypes inline fun UShortArray.first(
    predicate: (UShort) -> Boolean
): UShort

(source)

Returns the first element matching the given predicate.

Exceptions

NoSuchElementException - if no such element is found.

Common
JVM
JS
Native
1.0
fun <T> Iterable<T>.first(): T
(source)

Returns first element.

Exceptions

NoSuchElementException - if the collection is empty.

Common
JVM
JS
Native
1.0
fun <T> List<T>.first(): T
(source)

Returns first element.

Exceptions

NoSuchElementException - if the list is empty.