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ReplaceSizeZeroCheckWithIsEmpty

plugins/kotlin/code-insight/descriptions/resources-en/inspectionDescriptions/ReplaceSizeZeroCheckWithIsEmpty.html

2025.3-rc-2418 B
Original Source

Reports size == 0 checks on Collections/Array/String that should be replaced with isEmpty().

Using isEmpty() makes your code simpler.

The quick-fix replaces the size check with isEmpty().

Example:

fun foo() {
      val arrayOf = arrayOf(1, 2, 3)
      arrayOf.size == 0
  }

After the quick-fix is applied:

fun foo() {
      val arrayOf = arrayOf(1, 2, 3)
      arrayOf.isEmpty()
  }