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SimplifyAssertNotNull

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

2025.3-rc-2460 B
Original Source

Reports assert calls that check a not null value of the declared variable.

Using !! or ?: makes your code simpler.

The quick-fix replaces assert with !! or ?: operator in the variable initializer.

Example:

fun foo(p: Array<String?>) {
      val v = p[0]
      assert(v != null, { "Should be not null" })
  }

After the quick-fix is applied:

fun foo(p: Array<String?>) {
      val v = p[0] ?: error("Should be not null")
  }