kotlin-stdlib / kotlin.text / single

single

Common
JVM
JS
Native
1.0
fun CharSequence.single(): Char

Returns the single character, or throws an exception if the char sequence is empty or has more than one character.

Common
JVM
JS
Native
1.0
inline fun CharSequence.single(
    predicate: (Char) -> Boolean
): Char

Returns the single character matching the given predicate, or throws exception if there is no or more than one matching character.