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Assignment to 'for' loop parameter

Reports assignments to for loop parameters inside the for loop body.

While occasionally intended, this construct can be extremely confusing, and is often the result of a typo.


for (value in [1, 2, 3]) { value = 4 // warning }

Locating this inspection


Can be used to locate inspection in e.g. Qodana configuration files, where you can quickly enable or disable it, or adjust its settings.

Via Settings dialog

Path to the inspection settings via IntelliJ Platform IDE Settings dialog, when you need to adjust inspection settings directly from your IDE.

Settings or Preferences | Editor | Inspections | Groovy | Assignment issues


By default bundled with

IntelliJ IDEA 2024.1, Qodana for JVM 2024.1,

Can be installed with plugin

Groovy, 241.18072

Last modified: 18 June 2024