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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    <subfield code="a">Implicit parameters, implicit conversions, corpora analysis, Scala</subfield>
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    <subfield code="u">Northeastern University, Czech Technical University</subfield>
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    <subfield code="a">Scala Implicits Are Everywhere: A Large-Scale Study of the Use of Scala Implicits in the Wild</subfield>
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    <subfield code="a">&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;</subfield>
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