Improve multiple task handling (Task.all/any/some) in case of empty tasks-argument
#60
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…mpty `tasks`-argument
inamiy
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Mar 19, 2016
…y-case Improve multiple task handling (`Task.all`/`any`/`some`) in case of empty `tasks`-argument
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This is an improvement for multiple task handling (
Task.all/any/some) to also work for emptytaskscase as discussed in #59.For compatibility,
Task.anyis usingpreconditioninstead to warn users not to pass empty array from the beginning.(For better typing, we need different signature e.g.
public class func any(tasks: [Task]) -> Task<BulkProgress, Value?, Error>)