Kotlin's Control Flow Expressions: `if` and `when`
In Kotlin, `if` and `when` are expressions that return a value. This lets you assign their result directly to a variable, replacing Java's ternary operator. The footgun: when used as an expression, you must have an `else` branch to cover all cases.
In Kotlin, control flow constructs like `if` and `when` are expressions that return a value, not just statements. This lets you assign their result directly to a variable, cleaning up code by removing temporary mutable variables. It's Kotlin's replacement for the ternary operator. Use it for assigning conditional values, like choosing a display string or a configuration setting. The footgun: when used as an expression, the compiler requires it to be exhaustive.
Read the original → kotlinlang.org
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