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Authors: Diogo Poeira and Fernando Miguel Carvalho

Affiliation: CCISEL, cc.isel.pt, Polytechnic Institute of Lisbon, Portugal

Keyword(s): Yield, Generators, Streams, Lazy Sequences, Iterators, Extensions.

Abstract: Customizing streams pipelines with new user-defined operations is a well-known pattern regarding streams processing. However, programming languages face two challenges when considering streams extensibility: 1) provide a compact and readable way to express new operations, and 2) keep streams’ laziness behavior. From here, we may find a consensus around the adoption of the generator operator, i.e. yield, as a means to fulfil both requirements, since most state-of-the-art programming languages provide this feature. Yet, what is the performance overhead of interleaving a yield-based operation in streams processing? In this work we present a benchmark based on realistic use cases of two different web APIs, namely: Last.fm and world weather online, where custom yield-based operations may degrade the streams performance in twofold. We also propose a purely functional and minimalistic design, named tinyield, that can be easily adopted in any programming language and provides a concise way o f chaining extension operations fluently, with low overhead in the evaluated benchmarks. The tinyield proposal was deployed in three different libraries, namely for Java (jayield), JavaScript (tinyield4ts) and .Net (tinyield4net). (More)


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Paper citation in several formats:
Poeira, D. and Miguel Carvalho, F. (2021). Deconstructing yield Operator to Enhance Streams Processing. In Proceedings of the 16th International Conference on Software Technologies - ICSOFT; ISBN 978-989-758-523-4; ISSN 2184-2833, SciTePress, pages 143-150. DOI: 10.5220/0010541001430150

author={Diogo Poeira. and Fernando {Miguel Carvalho}.},
title={Deconstructing yield Operator to Enhance Streams Processing},
booktitle={Proceedings of the 16th International Conference on Software Technologies - ICSOFT},


JO - Proceedings of the 16th International Conference on Software Technologies - ICSOFT
TI - Deconstructing yield Operator to Enhance Streams Processing
SN - 978-989-758-523-4
IS - 2184-2833
AU - Poeira, D.
AU - Miguel Carvalho, F.
PY - 2021
SP - 143
EP - 150
DO - 10.5220/0010541001430150
PB - SciTePress