Dai Williams Daio-io
Daio-io
/ GuardLetKotlinExtension.kt
Created
December 31, 2016 15:07
An example of creating a Swift like guard let extension function in Kotlin
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| /** | |
| * Guard let in Kotlin | |
| **/ | |
| inline infix fun <reified T> T?.guard(call: () -> Unit): T? { | |
| if (this is T) return this | |
| else { | |
| call() | |
| return null | |
| } | |
| } |
Daio-io
/ WeakRefUtil.java
Created
September 2, 2016 18:01
Safely unwrap a WeakReference<T> without having to do chained if null check
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| public final class WeakRefUtil { | |
| /** | |
| * Safely unwrap a WeakReference<T> | |
| * | |
| * Returns reference if unwrapped or null | |
| * @param reference - WeakReference<T> | |
| * @return T | |
| */ | |
| @Nullable |