An empty parentheses block before a lambda is redundant.

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Metadata

ID: kotlin-best-practices/parens-before-trailing-lambda

Language: Kotlin

Severity: Notice

Category: Best Practices

Description

If a function has a lambda parameter and you’re passing a lambda expression, parentheses are unnecessary. Including unnecessary syntax makes the code less readable.

Non-Compliant Code Examples

val foo = "some-string".count() { it == '-' }

Compliant Code Examples

val foo = "some-string".count { it == '-' }

How to use this rule

1
2
rulesets:
  - kotlin-best-practices     # Rules to enforce Kotlin best practices.

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