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GString map key

Reports statements which use a groovy.lang.GString object as a key to map. In general GString objects are mutable and probably should not be used as keys. Also, a GString entry cannot be accessed with a java.lang.String object with same value.


def map = [:] def key = 'foo' map << ["${key}": 'bar'] assert map[key] == null // confusing 'true' result of comparison

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 | Potentially confusing code constructs

New in 2017.1


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