DuplicateMapKey.md

Pattern: Duplicate map key

Issue: -

Description

A Map literal is created with duplicated key. The map entry will be overwritten.

Example of violations:

def var1 = [a:1, a:2, b:3]        //violation
def var2 = [1:1, 1:2, 2:3]        //violation
def var3 = ["a":1, "a":2, "b":3]  //violation

// these are OK
def var4 = [a:1, b:1, c:1]
def var5 = [1:1, 2:1, 3:1]
def var6 = ["a":1, "b":1, "c":1]

Further Reading

• CodeNarc - DuplicateMapKey