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Last active October 9, 2017 13:55
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kotlin_tips_part2.md

Configuring Android Studio with Kotlin

@Bhavdip
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Bhavdip commented Oct 9, 2017 •
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Elivs operator

The Elivs operator is represented by a question mark followed by colon (?:) and has such syntax:

first operand ?: second operand

The elvis operator works follows: if first operand is not null, then this operand will be returned, otherwise second operand will be returned.
Note that the right hand side expression is evaluated only if left-hand side is null.

val correct  = quiz.currentQuestion?.answer?.correct ?: false

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