Journal article Open Access

Scala Implicits Are Everywhere: A Large-Scale Study of the Use of Scala Implicits in the Wild

Krikava, Filip; Miller, Heather; Vitek, Jan


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  <identifier identifierType="URL">https://zenodo.org/record/3407292</identifier>
  <creators>
    <creator>
      <creatorName>Krikava, Filip</creatorName>
      <givenName>Filip</givenName>
      <familyName>Krikava</familyName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="http://orcid.org/">0000-0002-0478-6202</nameIdentifier>
      <affiliation>Czech Technical University</affiliation>
    </creator>
    <creator>
      <creatorName>Miller, Heather</creatorName>
      <givenName>Heather</givenName>
      <familyName>Miller</familyName>
      <affiliation>Carnegie Mellon University</affiliation>
    </creator>
    <creator>
      <creatorName>Vitek, Jan</creatorName>
      <givenName>Jan</givenName>
      <familyName>Vitek</familyName>
      <affiliation>Northeastern University, Czech Technical University</affiliation>
    </creator>
  </creators>
  <titles>
    <title>Scala Implicits Are Everywhere: A Large-Scale Study of the Use of Scala Implicits in the Wild</title>
  </titles>
  <publisher>Zenodo</publisher>
  <publicationYear>2019</publicationYear>
  <subjects>
    <subject>Implicit parameters, implicit conversions, corpora analysis, Scala</subject>
  </subjects>
  <dates>
    <date dateType="Issued">2019-09-13</date>
  </dates>
  <resourceType resourceTypeGeneral="JournalArticle"/>
  <alternateIdentifiers>
    <alternateIdentifier alternateIdentifierType="url">https://zenodo.org/record/3407292</alternateIdentifier>
  </alternateIdentifiers>
  <relatedIdentifiers>
    <relatedIdentifier relatedIdentifierType="arXiv" relationType="IsIdenticalTo">arXiv:1908.07883</relatedIdentifier>
    <relatedIdentifier relatedIdentifierType="DOI" relationType="IsIdenticalTo">10.1145/3360589</relatedIdentifier>
  </relatedIdentifiers>
  <rightsList>
    <rights rightsURI="https://creativecommons.org/licenses/by/4.0/legalcode">Creative Commons Attribution 4.0 International</rights>
    <rights rightsURI="info:eu-repo/semantics/openAccess">Open Access</rights>
  </rightsList>
  <descriptions>
    <description descriptionType="Abstract">&lt;p&gt;The Scala programming language offers two distinctive language features implicit parameters and implicit&lt;br&gt;
conversions, often referred together as implicits. Announced without fanfare in 2004, implicits have quickly&lt;br&gt;
grown to become a widely and pervasively used feature of the language. They provide a way to reduce the&lt;br&gt;
boilerplate code in Scala programs. They are also used to implement certain language features without having&lt;br&gt;
to modify the compiler. We report on a large-scale study of the use of implicits in the wild. For this, we&lt;br&gt;
analyzed 7,280 Scala projects hosted on GitHub, spanning over 8.1M call sites involving implicits and 370.7K&lt;br&gt;
implicit declarations across 18.7M lines of Scala code.&lt;/p&gt;</description>
  </descriptions>
  <fundingReferences>
    <fundingReference>
      <funderName>European Commission</funderName>
      <funderIdentifier funderIdentifierType="Crossref Funder ID">10.13039/501100000780</funderIdentifier>
      <awardNumber awardURI="info:eu-repo/grantAgreement/EC/H2020/695412/">695412</awardNumber>
      <awardTitle>Evolving Language Ecosystems</awardTitle>
    </fundingReference>
  </fundingReferences>
</resource>
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