X-Git-Url: https://git.pterodactylus.net/?p=Sone.git;a=blobdiff_plain;f=src%2Fmain%2Fkotlin%2Fnet%2Fpterodactylus%2Fsone%2Futils%2FOptionals.kt;h=326db9da47903f8e3e68318e20e8f5c58f42054a;hp=5f53ed03a54a3a0c1585a5e0afd329f0dd92a8d3;hb=HEAD;hpb=aab46ff18650e49e9c812ec61cf80cf62af82f49

diff --git a/src/main/kotlin/net/pterodactylus/sone/utils/Optionals.kt b/src/main/kotlin/net/pterodactylus/sone/utils/Optionals.kt
index 5f53ed0..326db9d 100644
--- a/src/main/kotlin/net/pterodactylus/sone/utils/Optionals.kt
+++ b/src/main/kotlin/net/pterodactylus/sone/utils/Optionals.kt
@@ -3,6 +3,9 @@ package net.pterodactylus.sone.utils
 import com.google.common.base.Optional
 
 fun <T, R> Optional<T>.let(block: (T) -> R): R? = if (isPresent) block(get()) else null
-fun <T> Optional<T>.also(block: (T) -> Unit) = if (isPresent) block(get()) else Unit
+fun <T> Optional<T>.also(block: (T) -> Unit): Optional<T> { if (isPresent) block(get()); return this }
 
 fun <T> T?.asOptional(): Optional<T> = this?.let { Optional.of(it) } ?: Optional.absent<T>()
+
+fun <T, R> Iterable<T>.mapPresent(transform: (T) -> Optional<R>): List<R> =
+		map(transform).filter { it.isPresent }.map { it.get() }