Implemented the 'elementAt' and 'elementAtOrDefault' operators. see #41 #390
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Hi,
This implements the
ElementAt
andElementAtOrDefault
operators from #41.For
ElementAt
, if the index is less than 0, or greater than or equal to the number of elements in the source sequence, an IndexOutOfBoundsException will be threw.For
ElementAtOrDefault
, if the index is less than 0, an IndexOutOfBoundsException will be threw. What's more, I added adefaultValue
parameter. I can not get the element type in the source observable due to type erasure. So I can not determine the default value automatically. That's whyElementAtOrDefault
needs adefaultValue
parameter.