none

fun <T> Array<out T>.none(): Boolean(source)

Returns true if the array has no elements.

Since Kotlin

1.0

Samples


inline fun <T> Array<out T>.none(predicate: (T) -> Boolean): Boolean(source)
inline fun ByteArray.none(predicate: (Byte) -> Boolean): Boolean(source)
inline fun ShortArray.none(predicate: (Short) -> Boolean): Boolean(source)
inline fun IntArray.none(predicate: (Int) -> Boolean): Boolean(source)
inline fun LongArray.none(predicate: (Long) -> Boolean): Boolean(source)
inline fun FloatArray.none(predicate: (Float) -> Boolean): Boolean(source)
inline fun DoubleArray.none(predicate: (Double) -> Boolean): Boolean(source)
inline fun BooleanArray.none(predicate: (Boolean) -> Boolean): Boolean(source)
inline fun CharArray.none(predicate: (Char) -> Boolean): Boolean(source)
inline fun <T> Iterable<T>.none(predicate: (T) -> Boolean): Boolean(source)

Returns true if no elements match the given predicate.

Since Kotlin

1.0

Samples


Returns true if the collection has no elements.

Since Kotlin

1.0

Samples


fun <K, V> Map<out K, V>.none(): Boolean(source)

Returns true if the map has no entries.

Since Kotlin

1.0

Samples


inline fun <K, V> Map<out K, V>.none(predicate: (Map.Entry<K, V>) -> Boolean): Boolean(source)

Returns true if no entries match the given predicate.

Since Kotlin

1.0

Samples


Returns true if the array has no elements.

Since Kotlin

1.3

Samples


Returns true if no elements match the given predicate.

Since Kotlin

1.3

Samples