Commons/cz.acrobits.commons.util/CollectionUtil/coalesce

coalesce

@Contract(value = "null, null -> null; !null, _ -> !null; _, !null -> !null")

@Nullable

open fun <T> coalesce(@Nullable v1: @Nullable T, @Nullable v2: @Nullable T): @Nullable T

Return first non-null value.

Return

First non-null value or nullif all values are null.

Parameters

First value.

Second value.

@Contract(value = "null, null, null -> null; !null, _, _ -> !null; _, !null, _ -> !null; _, _, !null -> !null")

@Nullable

open fun <T> coalesce(@Nullable v1: @Nullable T, @Nullable v2: @Nullable T, @Nullable v3: @Nullable T): @Nullable T

Return first non-null value.

Return

First non-null value or nullif all values are null.

Parameters

First value.

Second value.

Third value.

@Contract(value = "null, null, null, null -> null; !null, _, _, _ -> !null; _, !null, _, _ -> !null; _, _, !null, _ -> !null; _, _, _, !null -> !null")

@Nullable

open fun <T> coalesce(@Nullable v1: @Nullable T, @Nullable v2: @Nullable T, @Nullable v3: @Nullable T, @Nullable v4: @Nullable T): @Nullable T

Return first non-null value.

Return

First non-null value or nullif all values are null.

Parameters

First value.

Second value.

Third value.

Fourth value.

@Contract(value = "null, null, null, null, null -> null; !null, _, _, _, _ -> !null; _, !null, _, _, _ -> !null; _, _, !null, _, _ -> !null; _, _, _, !null, _ -> !null; _, _, _, _, !null -> !null")

@Nullable

open fun <T> coalesce(@Nullable v1: @Nullable T, @Nullable v2: @Nullable T, @Nullable v3: @Nullable T, @Nullable v4: @Nullable T, @Nullable v5: @Nullable T): @Nullable T

Return first non-null value

Return

First non-null value or nullif all values are null.

Parameters

First value.

Second value.

Third value.

Fourth value.

Fifth value.