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Collections are a way for you to organize kata so that you can create your own training routines. Every collection you create is public and automatically sharable with other warriors. After you have added a few kata to a collection you and others can train on the kata contained within the collection.
Get started now by creating a new collection.
Random test doesn't work properly in Kotlin test.
src/test/kotlin/tests.kt:15:69: warning: 'toInt(): Int' is deprecated. Conversion of Char to Number is deprecated. Use Char.code property instead.
fun nextChar(from: Char, until: Char) = Random.nextInt(from.toInt(), until.toInt()).toChar()
^
src/test/kotlin/tests.kt:15:84: warning: 'toInt(): Int' is deprecated. Conversion of Char to Number is deprecated. Use Char.code property instead.
fun nextChar(from: Char, until: Char) = Random.nextInt(from.toInt(), until.toInt()).toChar()
is the meaning of it - '0' to convert char to integer again?