Kotlin Conditional Statements When-statement instead of if-else-if chains
Example
The when-statement is an alternative to an if-statement with multiple else-if-branches:
when {
str.length == 0 -> print("The string is empty!")
str.length > 5 -> print("The string is short!")
else -> print("The string is long!")
}
Same code written using an if-else-if chain:
if (str.length == 0) {
print("The string is empty!")
} else if (str.length > 5) {
print("The string is short!")
} else {
print("The string is long!")
}
Just like with the if-statement, the else-branch is optional, and you can add as many or as few branches as you like. You can also have multiline-branches:
when {
condition -> {
doSomething()
doSomeMore()
}
else -> doSomethingElse()
}
