Kotlin when Expression
Kotlin, when expression is a conditional expression which returns the value. Kotlin, when expression is replacement of switch statement. Kotlin, when expression works as a switch statement of other language (Java, C++, C).
Using when as an Expression
Let's see a simple example of when expression.
You provide Four
Using when Without Expression
It is not mandatory to use when as an expression, it can be used as normally as it used in other language.
Multiple Statement of when Using Braces
We can use multiple statement enclosed within block of condition.
Monday First day of the week
Multiple branches of when
We can use multiple branches of condition separated with a comma. It is used, when we need to run a same logic for multiple choices.
It is rainy season
Using when in the range
The when expression also check the ranges of input provided in when condition. A range is created using .. (double dot) operator. The in operator is used to check if a value belongs to a range.
Input is provided in the range 6 to 10
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