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kotlin elvis operator

Santino answered on August 24, 2020 Popularity 10/10 Helpfulness 2/10

answer kotlin elvis operator

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kotlin elvis operator

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In Kotlin, if statements are expressions. So the following code is equivalent:

if (a) b else c
The distinction between expression and statement is important here. In Java/C#/JavaScript, if forms a statement, meaning that it does not resolve to a value. More concretely, you can't assign it to a variable.

// Valid Kotlin, but invalid Java/C#/JavaScript
var v = if (a) b else c
If you're coming from a language where if is a statement, this might seem unnatural but that feeling should soon subside.

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Contributed on Feb 08 2021

Santino

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val l = b?.length ?: -1

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Tags: elvis-operator elvi

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Contributed on Aug 24 2020

Arrogant Anaconda

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kotlin elvis operator

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