# isIncremental

abstract fun isIncremental(): Boolean(source)

Indicates if it was possible for Gradle to determine which input files were out of date compared to a previous execution. Incremental inputs are unavailable when history is unavailable (i.e. this piece of work has never been executed before), or if there are changes to non-file input properties, or output files.

When `true`:

- getFileChanges and getFileChanges report changes to the input files compared to the previous execution.

When `false`:

- Every input file is reported via getFileChanges and getFileChanges as if it was ADDED.

#### Since

5.4