Undefined as first value of Observable.skipDuplicates() is skipped #80
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raimohanska
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Feb 13, 2013
Undefined as first value of Observable.skipDuplicates() is skipped
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When using skipDuplicates,
undefinedis used to mark initial previous value of streams. This works fine unlessundefinedis actually emitted to stream.This PR also causes the first comparison to be skipped when custom isEqual function is used, which changes the semantics slightly, but can be useful if your comparison function looks like