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filter

inline fun <A> A?.filter(f: (A) ->Boolean): A?

Returns the $receiver value if the result of $f applied on it is true otherwise null.

Example usage:

1.filter{ it > 5 } // null

1.filter{ it < 5 } // 1

Parameters

f - function to apply in the right side value.

Receiver the vlaue which $f will be appliead on.

Return the receiver if the result of applying $f on the right side value is true otherwise null.