--- title: Small Thing, Big Impact | daily.dev description: Trailing commas in Kotlin are a small syntactic choice with real team collaboration benefits. By consistently using trailing commas in function declarations... canonical: https://daily.dev/posts/small-thing-big-impact-ls8jwlcau twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Small Thing, Big Impact | daily.dev og:description: Trailing commas in Kotlin are a small syntactic choice with real team collaboration benefits. By consistently using trailing commas in function declarations... og:url: https://daily.dev/posts/small-thing-big-impact-ls8jwlcau og:image: https://api.daily.dev/og/posts/lS8jWLCau.png og:image:alt: Small Thing, Big Impact og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Small Thing, Big Impact **[ProAndroidDev](https://daily.dev/sources/pand)** · 6 min read · 2 upvotes · 0 comments ## Summary Trailing commas in Kotlin are a small syntactic choice with real team collaboration benefits. By consistently using trailing commas in function declarations and call sites, developers reduce unnecessary merge conflicts when adding or reordering parameters. The post covers the history of trailing commas across languages, explains how to enforce them in Kotlin projects using ktlint and .editorconfig flags (ij_kotlin_allow_trailing_comma and ij_kotlin_allow_trailing_comma_on_call_site), and shows how to auto-format an entire codebase with ./gradlew ktlintFormat. Android Studio can also be configured to add trailing commas automatically on reformat. ## Full article daily.dev links to this article rather than hosting it. 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