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count

kotlin-stdlib / kotlin.text / count
Platform and version requirements: JVM (1.0), JS (1.0), Native (1.0) 
fun CharSequence.count(): Int

Returns the length of this char sequence.

Platform and version requirements: JVM (1.0), JS (1.0), Native (1.0) 
inline fun CharSequence.count(
    predicate: (Char) -> Boolean
): Int

Returns the number of characters matching the given predicate.

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Licensed under the Apache License, Version 2.0.
https://kotlinlang.org/api/latest/jvm/stdlib/kotlin.text/count.html