single
Returns the single element, or throws an exception if the array is empty or has more than one element.
inline fun ComplexFloatArray.single(predicate: (ComplexFloat) -> Boolean): ComplexFloat
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inline fun ComplexDoubleArray.single(predicate: (ComplexDouble) -> Boolean): ComplexDouble
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Returns the single element matching the given predicate, or throws exception if there is no or more than one matching element.